Lab tests CPT 83735 California Outpatient

Magnesium test cost in California

In California, 103 hospitals publish a cash price for magnesium blood test: from $4.72 to $384.08, with a median of $106.08. The lowest price is at Stanford Health Care (Stanford). The highest price is 81.4× the lowest.

Outpatient cash prices, one line per hospital — its lowest listed price for code 83735. Prices for both sides of the body and inpatient prices are not mixed in. Collected Sep 24, 2026.

Lowest$4.72Stanford Health Care

Median$106.08half pay less

Highest$384.08in California

Lowest saves$101.36vs the median

Hospitals in California, cheapest first

Hospital	Cash price	List price	File date
Stanford Health Care lowest Stanford · San Jose-Sunnyvale-Santa Clara, CA HC 6956 Magnesium	$4.72	$11.80	Apr 1, 2026 source file
Watsonville Community Hospital Watsonville · Santa Cruz-Watsonville, CA Q10551 MG RBC ICP/MS	$5.29	$8.83	Sep 15, 2026 source file
Hoag Memorial Hospital Presbyterian Newport Beach · Los Angeles-Long Beach-Anaheim, CA HC Assay of Magnesium #	$5.74	$8.83	Apr 1, 2026 source file
Lucile Salter Packard Children's Hospital at Stanford Palo Alto · San Jose-Sunnyvale-Santa Clara, CA HC 114 Magnesium	$5.90	$11.80	Mar 31, 2026 source file
Centinela Hospital Medical Center Inglewood · Los Angeles-Long Beach-Anaheim, CA MAGNESIUM URINE	$6.00	$170.00	Sep 1, 2026 source file
Chino Valley Medical Center Chino · Riverside-San Bernardino-Ontario, CA Hc Assay Of Magnesium	$6.00	$248.35	Sep 1, 2026 source file
Desert Valley Hospital Victorville · Riverside-San Bernardino-Ontario, CA MAGNESIUM	$6.00	$175.00	Sep 1, 2026 source file
Encino Hospital Medical Center Encino · Los Angeles-Long Beach-Anaheim, CA LC 080283MAGNESIUM, RBC	$6.00	$12.00	Sep 1, 2026 source file
La Palma Intercommunity Hospital La Palma · Los Angeles-Long Beach-Anaheim, CA Hc Assay Of Magnesium	$6.00	$193.77	Sep 1, 2026 source file
Montclair Hospital Medical Center Montclair · Riverside-San Bernardino-Ontario, CA Hc Assay Of Magnesium	$6.00	$248.35	Sep 1, 2026 source file
Paradise Valley Hospital National City · San Diego-Chula Vista-Carlsbad, CA MAGNESIUM - 83735 - 17400150F	$6.00	$6.84	Sep 1, 2026 source file
Shasta Regional Medical Center Redding · Redding, CA MAGNESIUM LC	$6.00	$9.36	Sep 1, 2026 source file
Sherman Oaks Hospital Sherman Oaks · Los Angeles-Long Beach-Anaheim, CA MAGNESIUM RBC LC	$6.00	$5.00	Sep 1, 2026 source file
Loma Linda University Behavioral Medicine Center Redlands · Riverside-San Bernardino-Ontario, CA HC SOM MAGNESIUM RANDOM UR	$7.41	$7.41	Aug 31, 2026 source file
Loma Linda University Childrens Hospital Loma Linda · Riverside-San Bernardino-Ontario, CA HC SOM MAGNESIUM RANDOM UR	$7.41	$7.41	Sep 2, 2026 source file
Loma Linda University Medical Center Loma Linda · Riverside-San Bernardino-Ontario, CA HC SOM MAGNESIUM RANDOM UR	$7.41	$7.41	Sep 2, 2026 source file
Loma Linda University Medical Center - Murrieta Murrieta · Riverside-San Bernardino-Ontario, CA HC SOM MAGNESIUM RANDOM UR	$7.41	$7.41	Sep 2, 2026 source file
Banner Lassen Medical Center Susanville · Susanville, CA LAB MAGNESIUM URINE NS	$7.51	$12.00	Feb 12, 2026 source file
Grossmont Hospital La Mesa · San Diego-Chula Vista-Carlsbad, CA HC ASSAY OF MAGNESIUM - MAGNESIUM URINE	$7.93	$10.58	— source file
Sharp Chula Vista Medical Center Chula Vista · San Diego-Chula Vista-Carlsbad, CA HC ASSAY OF MAGNESIUM - MAGNESIUM URINE	$7.93	$10.58	— source file
Sharp Coronado Hospital and Healthcare Center Coronado · San Diego-Chula Vista-Carlsbad, CA HC ASSAY OF MAGNESIUM - MAGNESIUM URINE	$7.93	$10.58	— source file
Sharp Memorial Hospital San Diego · San Diego-Chula Vista-Carlsbad, CA HC ASSAY OF MAGNESIUM - MAGNESIUM URINE	$7.93	$10.58	— source file
Riverside University Medical Center Moreno Valley · Riverside-San Bernardino-Ontario, CA HC Qu Magnesium Urine	$8.77	$8.77	— source file
Providence Saint Joseph Medical Center Burbank · Los Angeles-Long Beach-Anaheim, CA HC ASSAY OF MAGNESIUM	$11.20	$32.00	Apr 1, 2026 source file
Cedars-Sinai Medical Center Los Angeles · Los Angeles-Long Beach-Anaheim, CA MAGNESIUM	$16.45	$25.31	Nov 26, 2025 source file
Mission Hospital Regional Med Center Mission Viejo · Los Angeles-Long Beach-Anaheim, CA HC MAGNESIUM QUANT URINE	$16.80	$35.00	Apr 1, 2026 source file
St Joseph Hospital of Orange Orange · Los Angeles-Long Beach-Anaheim, CA HC MAGNESIUM QUANT URINE	$16.80	$35.00	Apr 1, 2026 source file
St Jude Hospital Fullerton · Los Angeles-Long Beach-Anaheim, CA HC MAGNESIUM QUANT URINE	$16.80	$35.00	Apr 1, 2026 source file
St Mary Medical Center Apple Valley · Riverside-San Bernardino-Ontario, CA HC MAGNESIUM QUANT URINE	$16.80	$35.00	Apr 1, 2026 source file
UC San Diego Medical Center San Diego · San Diego-Chula Vista-Carlsbad, CA Magnesium level red blood cells	$17.24	$31.35	Apr 1, 2026 source file
Petaluma Valley Hospital Petaluma · Santa Rosa-Petaluma, CA HC MAGNESIUM QUANT URINE	$17.85	$35.00	Apr 1, 2026 source file
Providence Queen of the Valley Medical Center Napa · Napa, CA HC MAGNESIUM QUANT URINE	$17.85	$35.00	Apr 1, 2026 source file
Providence Redwood Memorial Hospital Fortuna · Eureka-Arcata, CA HC MAGNESIUM QUANT URINE	$17.85	$35.00	Apr 1, 2026 source file
Providence Santa Rosa Memorial Hospital Santa Rosa · Santa Rosa-Petaluma, CA HC MAGNESIUM QUANT URINE	$17.85	$35.00	Apr 1, 2026 source file
Providence St Joseph Hospital Eureka · Eureka-Arcata, CA HC MAGNESIUM QUANT URINE	$17.85	$35.00	Apr 1, 2026 source file
Chinese Hospital Association San Francisco · San Francisco-Oakland-Fremont, CA Magnesium level	$18.00	$18.00	Jul 22, 2026 source file
UCI Health - Fountain Valley Orange · Los Angeles-Long Beach-Anaheim, CA MAGNESIUM	$21.20	$53.00	Apr 1, 2026 source file
UCI Health - Los Alamitos Orange · Los Angeles-Long Beach-Anaheim, CA MAGNESIUM	$21.20	$53.00	Apr 1, 2026 source file
UCI Health - Placentia Linda Orange · Los Angeles-Long Beach-Anaheim, CA MAGNESIUM	$21.20	$53.00	Apr 1, 2026 source file
Saint John's Health Center Santa Monica · Los Angeles-Long Beach-Anaheim, CA HC MAGNESIUM QUANT URINE	$28.35	$81.00	Apr 1, 2026 source file
Providence Holy Cross Medical Center Mission Hills · Los Angeles-Long Beach-Anaheim, CA HC ASSAY OF MAGNESIUM CDM	$34.30	$98.00	Apr 1, 2026 source file
Rady Children's Hospital - San Diego San Diego · San Diego-Chula Vista-Carlsbad, CA Rch Scrmer Cv-Magnesium	$43.50	$58.00	Apr 1, 2026 source file
Ridgecrest Regional Hospital Ridgecrest · Bakersfield-Delano, CA Assay of magnesium	$46.44	$87.63	Sep 11, 2026 source file
Providence Cedars Sinai Tarzana Medical Center Tarzana · Los Angeles-Long Beach-Anaheim, CA HC ASSAY OF MAGNESIUM CDM	$50.40	$144.00	Apr 1, 2026 source file
Healdsburg Hospital Healdsburg · Santa Rosa-Petaluma, CA HC ASSAY OF MAGNESIUM CDM	$55.59	$109.00	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 MAGNESIUM	$63.35	$181.00	Apr 1, 2026 source file
Providence Little Company of Mary Medical Center Torrance Torrance · Los Angeles-Long Beach-Anaheim, CA HC MAGNESIUM-URINE	$63.35	$181.00	Apr 1, 2026 source file
Hayward Sisters Hospital Hayward · San Francisco-Oakland-Fremont, CA MAGNESIUM	$64.58	$215.25	Feb 23, 2026 source file
Shriners Childrens - Northern California Sacramento · Sacramento-Roseville-Folsom, CA MAGNESIUM LEVEL	$69.70	$69.70	— source file
Kaiser Foundation Hospital - Baldwin Park Baldwin Park · Los Angeles-Long Beach-Anaheim, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Kaiser Foundation Hospital - Downey Downey · Los Angeles-Long Beach-Anaheim, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Kaiser Foundation Hospital - Fontana Fontana · Riverside-San Bernardino-Ontario, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Kaiser Foundation Hospital - Los Angeles Los Angeles · Los Angeles-Long Beach-Anaheim, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Kaiser Foundation Hospital - Moreno Valley Moreno Valley · Riverside-San Bernardino-Ontario, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Kaiser Foundation Hospital - Ontario Ontario · Ontario, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Kaiser Foundation Hospital - Orange County - Anaheim Anaheim · Los Angeles-Long Beach-Anaheim, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Kaiser Foundation Hospital - Orange County - Irvine Irvine · Los Angeles-Long Beach-Anaheim, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Kaiser Foundation Hospital - Panorama City Panorama City · Los Angeles-Long Beach-Anaheim, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Kaiser Foundation Hospital - Riverside Riverside · Riverside-San Bernardino-Ontario, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Kaiser Foundation Hospital - San Diego - Clairemont Mesa San Diego · San Diego-Chula Vista-Carlsbad, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Kaiser Foundation Hospital - San Diego - Zion San Diego · San Diego-Chula Vista-Carlsbad, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Kaiser Foundation Hospital - San Marcos San Marcos · San Diego-Chula Vista-Carlsbad, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Kaiser Foundation Hospital - South Bay Harbor City · Los Angeles-Long Beach-Anaheim, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Kaiser Foundation Hospital - West la Los Angeles · Los Angeles-Long Beach-Anaheim, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Kaiser Foundation Hospital - Woodland Hills Woodland Hills · Los Angeles-Long Beach-Anaheim, CA ASSAY OF MAGNESIUM	$106.08	$204.00	— source file
Tri-City Medical Center Oceanside · San Diego-Chula Vista-Carlsbad, CA Magnesium Level	$108.05	$180.09	May 29, 2026 source file
Kaiser Foundation Hospital & Rehab Center - Vallejo Vallejo · Vallejo, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - Antioch Antioch · San Francisco-Oakland-Fremont, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - Fremont Fremont · San Francisco-Oakland-Fremont, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - Fresno Fresno · Fresno, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - Manteca Manteca · Stockton-Lodi, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - Modesto Modesto · Modesto, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - Oakland/Richmond Oakland · San Francisco-Oakland-Fremont, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - Redwood City Redwood City · San Francisco-Oakland-Fremont, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - Richmond Campus Richmond · Richmond, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - Roseville Roseville · Sacramento-Roseville-Folsom, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - Sacramento Sacramento · Sacramento-Roseville-Folsom, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - San Francisco San Francisco · San Francisco-Oakland-Fremont, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - San Jose San Jose · San Jose-Sunnyvale-Santa Clara, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - San Leandro San Leandro · San Francisco-Oakland-Fremont, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - San Rafael San Rafael · San Francisco-Oakland-Fremont, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - Santa Clara Santa Clara · San Jose-Sunnyvale-Santa Clara, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - Santa Rosa Santa Rosa · Santa Rosa-Petaluma, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - South Sacramento Sacramento · Sacramento-Roseville-Folsom, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - South San Francisco South San Francisco · San Francisco-Oakland-Fremont, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - Vacaville Vacaville · Vallejo, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Kaiser Foundation Hospital - Walnut Creek Walnut Creek · San Francisco-Oakland-Fremont, CA ASSAY OF MAGNESIUM	$120.40	$215.00	— source file
Cedars-Sinai Marina Hospital Marina del Rey · Los Angeles-Long Beach-Anaheim, CA Clinical and Anatomical Laboratory Services	$121.68	$187.21	Nov 26, 2025 source file
Fresno Community Hospital and Medical Center Fresno · Fresno, CA MAGNESIUM SERUM	$122.40	$153.00	Jun 18, 2026 source file
Fresno Community Hospital and Medical Center Clovis · Fresno, CA MAGNESIUM SERUM	$122.40	$153.00	Jun 15, 2026 source file
Palo Verde Hospital Blythe · Riverside-San Bernardino-Ontario, CA Magnesium Level	$134.25	$179.00	Jul 1, 2026 source file
Tahoe Forest Hospital Truckee · Truckee-Grass Valley, CA Magnesium level	$137.00	$137.00	Jul 6, 2026 source file
Madera Community Hospital Madera · Fresno, CA Magnesium level	$145.80	$243.00	Jul 30, 2026 source file
Stanford Health Care Tri-Valley Pleasanton · San Francisco-Oakland-Fremont, CA HC Magnesium Serum/Pl	$159.60	$399.00	Apr 1, 2026 source file
County of Monterey Salinas · Salinas, CA Magnesium level	$164.00	$164.00	Aug 14, 2026 source file
Keck Hospital of USC Los Angeles · Los Angeles-Long Beach-Anaheim, CA Assay Of Magnesium	$171.00	$171.00	Apr 1, 2026 source file
San Antonio Regional Hospital Upland · Riverside-San Bernardino-Ontario, CA Magnesium level	$185.00	$418.00	Apr 2, 2026 source file
El Camino Hospital Mountain View · San Jose-Sunnyvale-Santa Clara, CA HC MAGNESIUM	$189.00	$756.00	Apr 1, 2026 source file
USC Kenneth Norris Jr Cancer Hospital Los Angeles · Los Angeles-Long Beach-Anaheim, CA Assay Of Magnesium	$206.25	$206.25	Apr 1, 2026 source file
UCI Health - Lakewood Orange · Los Angeles-Long Beach-Anaheim, CA MAGNESIUM/4	$210.80	$527.00	Apr 1, 2026 source file
NorthBay Medical Center Fairfield · Vallejo, CA Magnesium Level 24 Hour Urine	$292.00	$292.00	Apr 1, 2026 source file
USC Verdugo Hills Hospital Glendale · Glendale, CA Assay Of Magnesium	$342.75	$342.75	Apr 1, 2026 source file
Hospital of Barstow Barstow · Riverside-San Bernardino-Ontario, CA Magnesium level	$384.08	$640.13	Sep 17, 2026 source file

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	31	$5.74	$50.40
Riverside-San Bernardino-Ontario, CA	15	$6.00	$8.77
San Francisco-Oakland-Fremont, CA	12	$18.00	$120.40
San Diego-Chula Vista-Carlsbad, CA	11	$6.00	$17.24
San Jose-Sunnyvale-Santa Clara, CA	5	$4.72	$120.40
Fresno, CA	4	$120.40	$122.40
Sacramento-Roseville-Folsom, CA	4	$69.70	$120.40
Santa Rosa-Petaluma, CA	4	$17.85	$36.72
Vallejo, CA	3	$120.40	$120.40
Eureka-Arcata, CA	2	$17.85	$17.85
Bakersfield-Delano, CA	1	$46.44	$46.44
Glendale, CA	1	$342.75	$342.75
Modesto, CA	1	$120.40	$120.40
Napa, CA	1	$17.85	$17.85
Ontario, CA	1	$106.08	$106.08
Richmond, CA	1	$120.40	$120.40
Redding, CA	1	$6.00	$6.00
Salinas, CA	1	$164.00	$164.00
Santa Cruz-Watsonville, CA	1	$5.29	$5.29
Stockton-Lodi, CA	1	$120.40	$120.40
Susanville, CA	1	$7.51	$7.51
Truckee-Grass Valley, CA	1	$137.00	$137.00

What it is

A magnesium test measures the level of magnesium in the blood. Doctors order it for muscle cramps or weakness, an irregular heartbeat, low potassium or calcium that does not correct, and for people on diuretics, long-term acid-reducing drugs or with kidney disease.

What the price covers

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

Magnesium blood test in other states

Median cash price across the state's hospitals.