Lab tests CPT 82140 California Outpatient

Ammonia test cost in California

In California, 203 hospitals publish a cash price for ammonia blood test: from $9.14 to $1,497.06, with a median of $180.96. The lowest price is at Seneca Healthcare District (Chester). The highest price is 163.8× the lowest.

Outpatient cash prices, one line per hospital — its lowest listed price for code 82140. Prices for both sides of the body and inpatient prices are not mixed in. Collected Oct 2, 2026. See them on a map

Lowest$9.14Seneca Healthcare District

Median$180.96half of hospitals charge less

Highest$1,497.06in California

Lowest saves$171.82vs the median

Hospitals in California, cheapest first

Hospital	Cash price	List price	File date
Seneca Healthcare District lowest Chester · Chester, CA Ammonia level	$9.14	$11.43	Jun 9, 2026 source file
St Elizabeth Community Hospital Red Bluff · Red Bluff, CA RL-FM-AMMONIA	$9.46	$16.19	Feb 28, 2026 source file
Mountains Community Hospital Lake Arrowhead · Riverside-San Bernardino-Ontario, CA AMMONIA	$10.64	$26.59	Jan 14, 2026 source file
St. Rose Hospital Hayward · San Francisco-Oakland-Fremont, CA AMMONIA	$10.93	$36.43	Feb 23, 2026 source file
Mercy Medical Center of Mt Shasta Mt Shasta · Mt Shasta, CA RL-SR-AMMONIA	$11.34	$14.57	Feb 28, 2026 source file
Lucile Salter Packard Children's Hospital at Stanford Palo Alto · San Jose-Sunnyvale-Santa Clara, CA HC 114 Lab1119 Ammonium Urine	$12.79	$25.59	Mar 31, 2026 source file
Centinela Hospital Medical Center Inglewood · Los Angeles-Long Beach-Anaheim, CA AMMONIA	$14.00	$396.00	Sep 1, 2026 source file
Chino Valley Medical Center Chino · Riverside-San Bernardino-Ontario, CA Hc Assay Of Ammonia	$14.00	$399.09	Sep 1, 2026 source file
Desert Valley Hospital Victorville · Riverside-San Bernardino-Ontario, CA AMMONIA	$14.00	$290.25	Sep 1, 2026 source file
Encino Hospital Medical Center Encino · Los Angeles-Long Beach-Anaheim, CA AMMONIA	$14.00	$222.60	Sep 1, 2026 source file
Garden Grove Hospital Medical Center Garden Grove · Los Angeles-Long Beach-Anaheim, CA Hc Assay Of Ammonia	$14.00	$437.93	Sep 1, 2026 source file
La Palma Intercommunity Hospital La Palma · Los Angeles-Long Beach-Anaheim, CA Hc Assay Of Ammonia	$14.00	$437.93	Sep 1, 2026 source file
Montclair Hospital Medical Center Montclair · Riverside-San Bernardino-Ontario, CA Hc Assay Of Ammonia	$14.00	$399.09	Sep 1, 2026 source file
Paradise Valley Hospital National City · San Diego-Chula Vista-Carlsbad, CA AMMONIA - 82140 - 1320316	$14.00	$153.62	Sep 1, 2026 source file
San Dimas Community Hospital San Dimas · Los Angeles-Long Beach-Anaheim, CA Hc Assay Of Ammonia	$14.00	$399.09	Sep 1, 2026 source file
Shasta Regional Medical Center Redding · Redding, CA AMMONIA	$14.00	$208.00	Sep 1, 2026 source file
Sherman Oaks Hospital Sherman Oaks · Los Angeles-Long Beach-Anaheim, CA AMMONIA BLOOD	$14.00	$150.00	Sep 1, 2026 source file
St Francis Medical Center Lynwood · Los Angeles-Long Beach-Anaheim, CA Hc Assay Of Ammonia	$14.00	$292.00	Sep 1, 2026 source file
West Anaheim Medical Center Anaheim · Los Angeles-Long Beach-Anaheim, CA Hc Assay Of Ammonia	$14.00	$437.93	Sep 1, 2026 source file
St Mary Medical Center Long Beach · Los Angeles-Long Beach-Anaheim, CA AMMONIA	$16.77	$39.00	Feb 28, 2026 source file
Mission Hospital Regional Med Center Mission Viejo · Los Angeles-Long Beach-Anaheim, CA HC ASSAY OF AMMONIA CDM	$16.80	$35.00	Apr 1, 2026 source file
Providence St Joseph Hospital Orange Orange · Los Angeles-Long Beach-Anaheim, CA HC ASSAY OF AMMONIA CDM	$16.80	$35.00	Apr 1, 2026 source file
St Jude Hospital Fullerton · Los Angeles-Long Beach-Anaheim, CA HC ASSAY OF AMMONIA CDM	$16.80	$35.00	Apr 1, 2026 source file
St Mary Medical Center Apple Valley · Riverside-San Bernardino-Ontario, CA HC ASSAY OF AMMONIA CDM	$16.80	$35.00	Apr 1, 2026 source file
Petaluma Valley Hospital Petaluma · Santa Rosa-Petaluma, CA HC ASSAY OF AMMONIA CDM	$17.85	$35.00	Apr 1, 2026 source file
Providence Queen of the Valley Medical Center Napa · Napa, CA HC ASSAY OF AMMONIA CDM	$17.85	$35.00	Apr 1, 2026 source file
Providence Redwood Memorial Hospital Fortuna · Eureka-Arcata, CA HC ASSAY OF AMMONIA CDM	$17.85	$35.00	Apr 1, 2026 source file
Providence Santa Rosa Memorial Hospital Santa Rosa · Santa Rosa-Petaluma, CA HC ASSAY OF AMMONIA CDM	$17.85	$35.00	Apr 1, 2026 source file
Providence St Joseph Hospital Eureka · Eureka-Arcata, CA HC ASSAY OF AMMONIA CDM	$17.85	$35.00	Apr 1, 2026 source file
French Hospital Medical Center San Luis Obispo · San Luis Obispo-Paso Robles, CA AMMONIA	$18.04	$46.00	Feb 28, 2026 source file
Scripps Green Hospital La Jolla · San Diego-Chula Vista-Carlsbad, CA HC Ammonia	$18.29	$73.15	Mar 30, 2026 source file
Scripps Memorial Hospital Encinitas Encinitas · San Diego-Chula Vista-Carlsbad, CA HC Ammonia	$18.29	$73.15	Mar 30, 2026 source file
Scripps Memorial Hospital La Jolla La Jolla · San Diego-Chula Vista-Carlsbad, CA HC Ammonia	$18.29	$73.15	Mar 30, 2026 source file
Scripps Mercy Hospital Chula Vista San Diego · San Diego-Chula Vista-Carlsbad, CA HC Ammonia	$18.29	$73.15	Mar 30, 2026 source file
Scripps Mercy Hospital San Diego San Diego · San Diego-Chula Vista-Carlsbad, CA HC Ammonia	$18.29	$73.15	Mar 30, 2026 source file
UCI Health - Fountain Valley Orange · Los Angeles-Long Beach-Anaheim, CA AMMONIA	$19.20	$48.00	Apr 1, 2026 source file
UCI Health - Los Alamitos Orange · Los Angeles-Long Beach-Anaheim, CA AMMONIA	$19.20	$48.00	Apr 1, 2026 source file
UCI Health - Placentia Linda Orange · Los Angeles-Long Beach-Anaheim, CA AMMONIA	$19.20	$48.00	Apr 1, 2026 source file
Marian Regional Medical Center Santa Maria · Santa Maria-Santa Barbara, CA AMMONIA	$19.69	$46.00	Feb 28, 2026 source file
San Gorgonio Memorial Hospital Banning · Riverside-San Bernardino-Ontario, CA AMMONIA LEVEL	$21.89	$109.46	May 20, 2026 source file
St. John's Pleasant Valley Hospital Camarillo · Oxnard-Thousand Oaks-Ventura, CA AMMONIA	$24.19	$58.28	Feb 28, 2026 source file
St Johns Regional Medical Center Oxnard · Oxnard-Thousand Oaks-Ventura, CA AMMONIA	$25.53	$58.28	Feb 28, 2026 source file
Banner Lassen Medical Center Susanville · Susanville, CA LAB AMMONIA	$27.54	$44.00	Sep 12, 2026 source file
St Bernardine Medical Center San Bernardino · Riverside-San Bernardino-Ontario, CA AMMONIA	$36.97	$111.00	Feb 28, 2026 source file
Providence Saint Joseph Medical Center Burbank · Los Angeles-Long Beach-Anaheim, CA HC ASSAY OF AMMONIA LAB	$41.65	$119.00	Apr 1, 2026 source file
Bakersfield Memorial Hospital Bakersfield · Bakersfield-Delano, CA AMMONIA	$45.88	$125.00	Feb 28, 2026 source file
Mercy Hospital Bakersfield · Bakersfield-Delano, CA AMMONIA	$46.38	$125.00	Feb 28, 2026 source file
Trinity Hospital Weaverville · Weaverville, CA AMMONIA	$47.50	$95.00	Mar 30, 2026 source file
Glendale Memorial Hospital & Health Center Glendale · Los Angeles-Long Beach-Anaheim, CA AMMONIA	$51.19	$157.00	Feb 28, 2026 source file
Community Hospital of San Bernardino San Bernardino · Riverside-San Bernardino-Ontario, CA AMMONIA	$52.40	$134.00	Feb 28, 2026 source file
Providence Cedars Sinai Tarzana Medical Center Tarzana · Los Angeles-Long Beach-Anaheim, CA HC ASSAY OF AMMONIA LAB	$52.50	$150.00	Apr 1, 2026 source file
Saint John's Health Center Santa Monica · Los Angeles-Long Beach-Anaheim, CA HC ASSAY OF AMMONIA LAB	$54.95	$157.00	Apr 1, 2026 source file
Providence Little Co of Mary Medical Center San Pedro San Pedro · Los Angeles-Long Beach-Anaheim, CA HC ASSAY OF AMMONIA LAB	$56.70	$162.00	Apr 1, 2026 source file
Providence Little Company of Mary Medical Center Torrance Torrance · Los Angeles-Long Beach-Anaheim, CA HC ASSAY OF AMMONIA LAB	$56.70	$162.00	Apr 1, 2026 source file
El Camino Hospital Mountain View · San Jose-Sunnyvale-Santa Clara, CA HC AMMONIA BL	$62.00	$248.00	Apr 1, 2026 source file
Pioneers Memorial Hospital Brawley · El Centro, CA Ammonia Level	$63.21	$180.60	Feb 1, 2026 source file
UC San Diego Medical Center San Diego · San Diego-Chula Vista-Carlsbad, CA Ammonia Level	$64.35	$117.00	Apr 1, 2026 source file
Mercy Medical Center Redding Redding · Redding, CA AMMONIA	$66.42	$131.00	Feb 28, 2026 source file
Palomar Medical Center Escondido Escondido · San Diego-Chula Vista-Carlsbad, CA Ammonia Level	$66.72	$111.20	Apr 1, 2026 source file
Palomar Medical Center Poway Poway · San Diego-Chula Vista-Carlsbad, CA Ammonia Level	$66.72	$111.20	Apr 1, 2026 source file
Hoag Memorial Hospital Presbyterian Newport Beach · Los Angeles-Long Beach-Anaheim, CA HC Assay of Ammonia #	$66.92	$102.95	Apr 1, 2026 source file
American Advanced - Glenn Medical Center Willows · Willows, CA AMMONIA	$73.08	$121.80	Oct 4, 2025 source file
Ridgecrest Regional Hospital Ridgecrest · Bakersfield-Delano, CA Ammonia	$73.21	$138.13	Sep 11, 2026 source file
Rady Children's Hospital - San Diego San Diego · San Diego-Chula Vista-Carlsbad, CA Rch Scrmer Hc-Ammonia	$74.25	$99.00	Apr 1, 2026 source file
Keck Hospital of USC Los Angeles · Los Angeles-Long Beach-Anaheim, CA Assay Of Ammonia	$77.50	$77.50	Apr 1, 2026 source file
Anaheim Global Medical Center Anaheim · Los Angeles-Long Beach-Anaheim, CA AMMONIA	$80.00	$80.00	Jun 15, 2026 source file
Chapman Global Medical Center Orange · Los Angeles-Long Beach-Anaheim, CA AMMONIA	$80.00	$80.00	May 6, 2026 source file
Orange County Global Medical Center Santa Ana · Los Angeles-Long Beach-Anaheim, CA AMMONIA	$80.00	$80.00	Jun 15, 2026 source file
Eastern Plumas Health Care Porola · Porola, CA Ammonia Level	$83.20	$104.00	Jun 16, 2026 source file
Mercy General Hospital Sacramento · Sacramento-Roseville-Folsom, CA AMMONIA	$85.68	$393.00	Feb 28, 2026 source file
Mad River Community Hospital Arcata · Eureka-Arcata, CA 24HR AMMONIA	$91.95	$91.95	Jul 22, 2025 source file
Mercy San Juan Medical Center Carmichael · Sacramento-Roseville-Folsom, CA AMMONIA	$107.69	$393.00	Feb 28, 2026 source file
Woodland Memorial Hospital Woodland · Sacramento-Roseville-Folsom, CA AMMONIA	$107.69	$393.00	Feb 28, 2026 source file
Sequoia Hospital Redwood City · San Francisco-Oakland-Fremont, CA AMMONIA	$112.12	$308.00	Feb 28, 2026 source file
Providence Holy Cross Medical Center Mission Hills · Los Angeles-Long Beach-Anaheim, CA HC ASSAY OF AMMONIA LAB	$112.70	$322.00	Apr 1, 2026 source file
Methodist Hospital of Sacramento Sacramento · Sacramento-Roseville-Folsom, CA AMMONIA	$113.19	$393.00	Feb 28, 2026 source file
Dominican Hospital Santa Cruz · Santa Cruz-Watsonville, CA AMMONIA	$113.85	$253.00	Feb 28, 2026 source file
Oroville Hospital Oroville · Chico, CA Ammonia	$115.00	$229.00	— source file
Healdsburg Hospital Healdsburg · Santa Rosa-Petaluma, CA HC ASSAY OF AMMONIA LAB	$118.83	$233.00	Apr 1, 2026 source file
Grossmont Hospital La Mesa · San Diego-Chula Vista-Carlsbad, CA HC ASSAY OF AMMONIA - AMMONIA	$120.75	$161.00	Apr 1, 2026 source file
Sharp Chula Vista Medical Center Chula Vista · San Diego-Chula Vista-Carlsbad, CA HC ASSAY OF AMMONIA - AMMONIA	$120.75	$161.00	Apr 1, 2026 source file
Sharp Coronado Hospital and Healthcare Center Coronado · San Diego-Chula Vista-Carlsbad, CA HC ASSAY OF AMMONIA - AMMONIA	$120.75	$161.00	Apr 1, 2026 source file
Sharp Memorial Hospital San Diego · San Diego-Chula Vista-Carlsbad, CA HC ASSAY OF AMMONIA - AMMONIA	$120.75	$161.00	Apr 1, 2026 source file
Tri-City Medical Center Oceanside · San Diego-Chula Vista-Carlsbad, CA Ammonia Level	$122.34	$203.90	May 29, 2026 source file
Good Samaritan Hospital Bakersfield · Bakersfield-Delano, CA AMMONIA LEVEL	$125.93	$179.90	May 11, 2026 source file
Saint Agnes Medical Center Fresno · Fresno, CA HC Ammonia	$131.95	$203.00	Mar 31, 2026 source file
Shriners Childrens - Northern California Sacramento · Sacramento-Roseville-Folsom, CA ASSAY OF AMMONIA	$151.60	$151.60	Mar 19, 2026 source file
Mercy Hospital of Folsom Folsom · Sacramento-Roseville-Folsom, CA AMMONIA	$152.88	$393.00	Feb 28, 2026 source file
Pacifica Hospital of the Valley Sun Valley · Los Angeles-Long Beach-Anaheim, CA Ammonia,blood -Lab	$155.00	$155.00	— source file
Palo Verde Hospital Blythe · Riverside-San Bernardino-Ontario, CA Ammonia Level	$156.00	$208.00	Jul 1, 2026 source file
Modoc Medical Center Alturas · Alturas, CA Ammonia level	$157.29	$157.29	Sep 28, 2026 source file
Northridge Hospital Medical Center Northridge · Northridge, CA AMMONIA	$158.48	$568.00	Feb 28, 2026 source file
Orchard Hospital Gridley · Chico, CA Ammonia level	$159.43	$265.72	Sep 26, 2026 source file
Mark Twain Medical Center San Andreas · San Andreas, CA AMMONIA	$167.84	$252.00	Feb 28, 2026 source file
Sierra Nevada Memorial-Miners Hospital Grass Valley · Truckee-Grass Valley, CA AMMONIA	$171.13	$314.00	Feb 28, 2026 source file
Clovis Community Medical Center Clovis · Fresno, CA AMMONIA	$177.34	$221.67	Jun 15, 2026 source file
Community Regional Medical Center Fresno · Fresno, CA AMMONIA	$177.34	$221.67	Jun 18, 2026 source file
Fresno Heart and Surgical Hospital Fresno · Fresno, CA AMMONIA	$177.34	$221.67	Jun 16, 2026 source file
USC Kenneth Norris Jr Cancer Hospital Los Angeles · Los Angeles-Long Beach-Anaheim, CA Assay Of Ammonia	$178.50	$178.50	Apr 1, 2026 source file
California Hospital Medical Center LA Los Angeles · Los Angeles-Long Beach-Anaheim, CA AMMONIA	$179.94	$371.00	Feb 28, 2026 source file
Kaiser Foundation Hospital - Baldwin Park Baldwin Park · Los Angeles-Long Beach-Anaheim, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Downey Downey · Los Angeles-Long Beach-Anaheim, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Fontana Fontana · Riverside-San Bernardino-Ontario, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Los Angeles Los Angeles · Los Angeles-Long Beach-Anaheim, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Moreno Valley Moreno Valley · Riverside-San Bernardino-Ontario, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Orange County - Anaheim Anaheim · Los Angeles-Long Beach-Anaheim, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Panorama City Panorama City · Los Angeles-Long Beach-Anaheim, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Riverside Riverside · Riverside-San Bernardino-Ontario, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - San Diego - Clairemont Mesa San Diego · San Diego-Chula Vista-Carlsbad, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - San Diego - Zion San Diego · San Diego-Chula Vista-Carlsbad, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - San Marcos San Marcos · San Diego-Chula Vista-Carlsbad, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - South Bay Harbor City · Los Angeles-Long Beach-Anaheim, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - West LA Los Angeles · Los Angeles-Long Beach-Anaheim, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Woodland Hills Woodland Hills · Los Angeles-Long Beach-Anaheim, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaiser Fnd Hospital - Irvine Irvine · Los Angeles-Long Beach-Anaheim, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaiser Ontario Medical Center Campus Ontario · Riverside-San Bernardino-Ontario, CA ASSAY OF AMMONIA	$180.96	$348.00	Apr 1, 2026 source file
Kaweah Health Medical Center Visalia · Visalia, CA Ammonia Blood	$181.00	$181.00	Jul 14, 2026 source file
San Antonio Regional Hospital Upland · Riverside-San Bernardino-Ontario, CA Ammonia level	$185.00	$910.00	Apr 2, 2026 source file
Fairchild Medical Center Yreka · Yreka, CA Ammonia level	$189.00	$189.00	Sep 24, 2026 source file
Los Robles Hospital and Medical Center Thousand Oaks · Oxnard-Thousand Oaks-Ventura, CA AMMONIA	$189.83	$189.83	Sep 1, 2026 source file
Plumas District Hospital Quincy · Quincy, CA Ammonia level	$193.60	$242.00	Aug 5, 2026 source file
Loma Linda University Childrens Hospital Loma Linda · Riverside-San Bernardino-Ontario, CA HC AMMONIA	$202.05	$449.00	Sep 2, 2026 source file
Loma Linda University Medical Center Loma Linda · Riverside-San Bernardino-Ontario, CA HC AMMONIA	$202.05	$449.00	Sep 2, 2026 source file
Loma Linda University Medical Center - Murrieta Murrieta · Riverside-San Bernardino-Ontario, CA HC AMMONIA	$202.05	$449.00	Sep 2, 2026 source file
St Joseph's Medical Center of Stockton Stockton · Stockton-Lodi, CA SJM-AMMONIA	$207.27	$705.00	Feb 28, 2026 source file
Tahoe Forest Hospital Truckee · Truckee-Grass Valley, CA Ammonia level	$208.00	$208.00	Sep 28, 2026 source file
Jerold Phelps Community Hospital Garberville · Eureka-Arcata, CA HC ASSAY OF AMMONIA - AMMONIA	$217.90	$272.38	Aug 14, 2026 source file
Kaiser Foundation Hospital & Rehab Center - Vallejo Vallejo · Vallejo, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Antioch Antioch · San Francisco-Oakland-Fremont, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Fremont Fremont · San Francisco-Oakland-Fremont, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Fresno Fresno · Fresno, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Manteca Manteca · Stockton-Lodi, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Modesto Modesto · Modesto, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Oakland/Richmond Oakland · San Francisco-Oakland-Fremont, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Redwood City Redwood City · San Francisco-Oakland-Fremont, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Roseville Roseville · Sacramento-Roseville-Folsom, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Sacramento Sacramento · Sacramento-Roseville-Folsom, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - San Francisco San Francisco · San Francisco-Oakland-Fremont, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - San Jose San Jose · San Jose-Sunnyvale-Santa Clara, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - San Leandro San Leandro · San Francisco-Oakland-Fremont, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - San Rafael San Rafael · San Francisco-Oakland-Fremont, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Santa Clara Santa Clara · San Jose-Sunnyvale-Santa Clara, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Santa Rosa Santa Rosa · Santa Rosa-Petaluma, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - South Sacramento Sacramento · Sacramento-Roseville-Folsom, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - South San Francisco South San Francisco · San Francisco-Oakland-Fremont, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Vacaville Vacaville · Vallejo, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Foundation Hospital - Walnut Creek Walnut Creek · San Francisco-Oakland-Fremont, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Kaiser Fnd Hospital - Richmond Campus Richmond · San Francisco-Oakland-Fremont, CA ASSAY OF AMMONIA	$222.88	$398.00	Apr 1, 2026 source file
Childrens Hospital at Mission - Cerner Mission Viejo · Los Angeles-Long Beach-Anaheim, CA AMMONIA	$227.00	$227.00	Mar 18, 2026 source file
County of Monterey Salinas · Salinas, CA Ammonia level	$239.00	$239.00	Aug 14, 2026 source file
Victor Valley Global Medical Center Victorville · Riverside-San Bernardino-Ontario, CA AMMONIA BLOOD	$241.00	$241.00	May 13, 2026 source file
UCI Health - Lakewood Orange · Los Angeles-Long Beach-Anaheim, CA AMMONIA	$242.40	$606.00	Apr 1, 2026 source file
Foothill Regional Medical Center Tustin · Los Angeles-Long Beach-Anaheim, CA AMMONIA (Chem)	$248.66	$248.66	Mar 18, 2026 source file
Mercy Medical Center Merced · Merced, CA AMMONIA	$259.56	$504.00	Feb 28, 2026 source file
Los Angeles Community Hospital Los Angeles · Los Angeles-Long Beach-Anaheim, CA AMMONIA (Chem)	$267.08	$267.08	Mar 18, 2026 source file
Madera Community Hospital Madera · Fresno, CA Ammonia level	$267.60	$446.00	Jul 30, 2026 source file
Southern California Hospital at Hollywood Hollywood · Los Angeles-Long Beach-Anaheim, CA AMMONIA (Chem)	$270.54	$270.54	Mar 18, 2026 source file
Southern California Hospital at Van Nuys D/P Aph Van Nuys · Los Angeles-Long Beach-Anaheim, CA AMMONIA (Chem)	$270.54	$270.54	Mar 18, 2026 source file
Southern California Hospital at Culver City Culver City · Culver City, CA AMMONIA (Chem)	$271.68	$271.68	Mar 18, 2026 source file
Stanford Health Care Tri-Valley Pleasanton · San Francisco-Oakland-Fremont, CA HC Bld Ammonia Test	$282.40	$706.00	Apr 1, 2026 source file
Hemet Global Medical Center Hemet · Riverside-San Bernardino-Ontario, CA LAB AMMONIA BLOOD	$301.00	$301.00	Jun 15, 2026 source file
Menifee Global Medical Center Menifee · Riverside-San Bernardino-Ontario, CA LAB AMMONIA BLOOD	$301.00	$301.00	May 20, 2026 source file
Dameron Hospital Stockton · Stockton-Lodi, CA Ammonia level	$318.64	$708.08	Apr 2, 2026 source file
USC Verdugo Hills Hospital Glendale · Glendale, CA Assay Of Ammonia	$326.25	$326.25	Apr 1, 2026 source file
Sutter Amador Hospital Jackson · Jackson, CA HCHG AMMONIA	$327.00	$327.00	Apr 1, 2026 source file
Sutter Coast Hospital Crescent City · Crescent City, CA HCHG AMMONIA	$327.00	$327.00	Apr 1, 2026 source file
Sutter Lakeside Hospital Lakeport · Clearlake, CA HCHG AMMONIA	$327.00	$327.00	Apr 1, 2026 source file
Stanford Health Care Stanford · San Jose-Sunnyvale-Santa Clara, CA HC Bld Ammonia Test	$335.20	$838.00	Apr 1, 2026 source file
Catalina Island Medical Center Avalon · Los Angeles-Long Beach-Anaheim, CA Ammonia level	$351.92	$502.74	Jul 20, 2026 source file
East Los Angeles Doctors Hospital Los Angeles · Los Angeles-Long Beach-Anaheim, CA ASSAY OF AMMONIA	$372.75	$372.75	Feb 4, 2026 source file
Memorial Hospital of Gardena Gardena · Los Angeles-Long Beach-Anaheim, CA ASSAY OF AMMONIA	$372.75	$372.75	Feb 4, 2026 source file
Memorial Hospital Los Banos Los Banos · Merced, CA HCHG AMMONIA	$387.00	$387.00	Apr 1, 2026 source file
Memorial Medical Center Modesto · Modesto, CA HCHG CORE AMMONIA	$387.00	$387.00	Apr 1, 2026 source file
Sutter Auburn Faith Hospital Auburn · Sacramento-Roseville-Folsom, CA HCHG CORE AMMONIA	$387.00	$387.00	Apr 1, 2026 source file
Sutter Davis Hospital Davis · Sacramento-Roseville-Folsom, CA HCHG CORE AMMONIA	$387.00	$387.00	Apr 1, 2026 source file
Sutter Medical Center, Sacramento Sacramento · Sacramento-Roseville-Folsom, CA HCHG AMMONIA	$387.00	$387.00	Apr 1, 2026 source file
Sutter Roseville Medical Center Roseville · Sacramento-Roseville-Folsom, CA HCHG AMMONIA	$387.00	$387.00	Apr 1, 2026 source file
Sutter Surgical Hospital - North Valley Yuba City · Yuba City, CA HCHG CORE AMMONIA	$387.00	$387.00	Apr 1, 2026 source file
Sutter Tracy Community Hospital Tracy · Stockton-Lodi, CA HCHG AMMONIA	$387.00	$387.00	Apr 1, 2026 source file
Cedars-Sinai Medical Center Los Angeles · Los Angeles-Long Beach-Anaheim, CA HB MISC LAB SPECIAL TEST	$394.18	$606.43	Nov 26, 2025 source file
Alta Bates Summit Medical Center Oakland · San Francisco-Oakland-Fremont, CA HCHG AMMONIA	$411.00	$411.00	Apr 1, 2026 source file
Alta Bates Summit Medical Center - Alta Bates Camp Berkeley · San Francisco-Oakland-Fremont, CA HCHG AMMONIA	$411.00	$411.00	Apr 1, 2026 source file
Alta Bates Summit Medical Center - Herrick Campus Berkeley · San Francisco-Oakland-Fremont, CA HCHG AMMONIA	$411.00	$411.00	Apr 1, 2026 source file
Alta Bates Summit Medical Center-Summit Campus-Hawthorne Oakland · San Francisco-Oakland-Fremont, CA HCHG AMMONIA	$411.00	$411.00	Apr 1, 2026 source file
California Pacific Medical Center- Van Ness Campus San Francisco · San Francisco-Oakland-Fremont, CA HCHG AMMONIA	$411.00	$411.00	Apr 1, 2026 source file
California Pacific Medical Ctr-Davies Campus Hospital San Francisco · San Francisco-Oakland-Fremont, CA HCHG AMMONIA	$411.00	$411.00	Apr 1, 2026 source file
Eden Medical Center Castro Valley · San Francisco-Oakland-Fremont, CA HCHG AMMONIA	$411.00	$411.00	Apr 1, 2026 source file
Mills Health Center San Mateo · San Francisco-Oakland-Fremont, CA HCHG CORE AMMONIA	$411.00	$411.00	Apr 1, 2026 source file
Mills-Peninsula Medical Center Burlingame · San Francisco-Oakland-Fremont, CA HCHG AMMONIA	$411.00	$411.00	Apr 1, 2026 source file
Novato Community Hospital Novato · San Francisco-Oakland-Fremont, CA HCHG AMMONIA	$411.00	$411.00	Apr 1, 2026 source file
Sutter Delta Medical Center Antioch · San Francisco-Oakland-Fremont, CA HCHG AMMONIA	$411.00	$411.00	Apr 1, 2026 source file
Sutter Maternity & Surgery Center of Santa Cruz Santa Cruz · Santa Cruz-Watsonville, CA HCHG CORE AMMONIA	$411.00	$411.00	Apr 1, 2026 source file
Sutter Santa Rosa Regional Hospital Santa Rosa · Santa Rosa-Petaluma, CA HCHG AMMONIA	$411.00	$411.00	Apr 1, 2026 source file
Sutter Solano Medical Center Vallejo · Vallejo, CA HCHG CORE AMMONIA	$411.00	$411.00	Apr 1, 2026 source file
Barstow Community Hospital Barstow · Riverside-San Bernardino-Ontario, CA Ammonia level	$417.73	$696.21	Sep 17, 2026 source file
NorthBay Medical Center Fairfield · Vallejo, CA Ammonia Blood	$438.00	$438.00	Apr 1, 2026 source file
Sonoma Valley Hospital Sonoma · Santa Rosa-Petaluma, CA Ammonia level	$443.80	$634.00	May 22, 2026 source file
Cedars-Sinai Marina Hospital Marina del Rey · Los Angeles-Long Beach-Anaheim, CA Outpatient Global Laboratory, Radiology and Diagnostic Services	$450.98	$693.81	Nov 26, 2025 source file
Watsonville Community Hospital Watsonville · Santa Cruz-Watsonville, CA AMMONIA	$487.62	$812.70	Sep 28, 2026 source file
Riverside University Medical Center Moreno Valley · Riverside-San Bernardino-Ontario, CA HC Assay Blood for Ammonia	$513.55	$513.55	Mar 30, 2026 source file
Chinese Hospital San Francisco · San Francisco-Oakland-Fremont, CA Ammonia level	$614.00	$614.00	Jul 22, 2026 source file
Riverside Community Hospital Riverside · Riverside-San Bernardino-Ontario, CA AMMONIA	$1,272.50	$1,272.50	Sep 1, 2026 source file
Good Samaritan Hospital Los Gatos · San Jose-Sunnyvale-Santa Clara, CA AMMONIA	$1,497.06	$1,497.06	Sep 1, 2026 source file

Hospital The hospital that published the price, its city and the line exactly as written in its price file.

Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More

List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More

File date When the hospital last updated its price file, as the file says itself. A dash means the file gives no date.

No cash discount This line's cash price equals the hospital's full list price. Many hospitals still reduce bills for uninsured patients: ask the billing office for its self-pay discount in writing. More

By metro area

Each metro page compares every listing, including prices for both sides of the body.

Metro area	Hospitals	Lowest	Median
Los Angeles-Long Beach-Anaheim, CA	50	$14.00	$80.00
San Francisco-Oakland-Fremont, CA	25	$10.93	$282.40
Riverside-San Bernardino-Ontario, CA	23	$10.64	$180.96
San Diego-Chula Vista-Carlsbad, CA	18	$14.00	$70.48
Sacramento-Roseville-Folsom, CA	13	$85.68	$222.88
Fresno, CA	6	$131.95	$177.34
San Jose-Sunnyvale-Santa Clara, CA	6	$12.79	$222.88
Santa Rosa-Petaluma, CA	6	$17.85	$170.86
Bakersfield-Delano, CA	4	$45.88	$59.80
Eureka-Arcata, CA	4	$17.85	$54.90
Stockton-Lodi, CA	4	$207.27	$270.76
Vallejo, CA	4	$222.88	$316.94
Oxnard-Thousand Oaks-Ventura, CA	3	$24.19	$25.53
Santa Cruz-Watsonville, CA	3	$113.85	$411.00
Chico, CA	2	$115.00	$137.22
Merced, CA	2	$259.56	$323.28
Modesto, CA	2	$222.88	$304.94
Redding, CA	2	$14.00	$40.21
Truckee-Grass Valley, CA	2	$171.13	$189.56
Alturas, CA	1	$157.29	$157.29
Chester, CA	1	$9.14	$9.14
Culver City, CA	1	$271.68	$271.68
Clearlake, CA	1	$327.00	$327.00
Crescent City, CA	1	$327.00	$327.00
El Centro, CA	1	$63.21	$63.21
Glendale, CA	1	$326.25	$326.25
Jackson, CA	1	$327.00	$327.00
Mt Shasta, CA	1	$11.34	$11.34
Northridge, CA	1	$158.48	$158.48
Napa, CA	1	$17.85	$17.85
Porola, CA	1	$83.20	$83.20
Quincy, CA	1	$193.60	$193.60
Red Bluff, CA	1	$9.46	$9.46
San Andreas, CA	1	$167.84	$167.84
Salinas, CA	1	$239.00	$239.00
San Luis Obispo-Paso Robles, CA	1	$18.04	$18.04
Santa Maria-Santa Barbara, CA	1	$19.69	$19.69
Susanville, CA	1	$27.54	$27.54
Visalia, CA	1	$181.00	$181.00
Weaverville, CA	1	$47.50	$47.50
Willows, CA	1	$73.08	$73.08
Yreka, CA	1	$189.00	$189.00
Yuba City, CA	1	$387.00	$387.00

Market A metro area (as the Census Bureau defines it) or, outside metro areas, a town. Each links to every hospital price there.

Hospitals How many hospitals publish a cash price for this code here. Each hospital counts once, at its lowest outpatient cash price.

Lowest The lowest cash price among those hospitals.

Median The middle cash price: half of the hospitals charge less, half charge more. One price per hospital. More

What it is

An ammonia test measures ammonia in the blood. It is used for confusion or drowsiness in people with liver disease and for some rare inherited disorders in newborns.

What the price covers

The price usually covers running the test. The blood draw (36415) is often billed as a separate line.

Ammonia blood test in other states

Median cash price across the state's hospitals.