Ammonia test cost in Chicago, IL
In Chicago-Naperville-Elgin, IL-IN, 63 hospitals list a cash price for ammonia blood test: from $12.17 to $448.94, with a median of $88.82. The lowest listed price is at Roseland Community Hospital — $76.65 less than the median here. Across Illinois, the median is $106.50 at 113 hospitals.
Cash prices at 63 facilities across 45 cities for code 82140, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 29, 2026; the hospital files themselves were last updated between Mar 17, 2025 and Sep 1, 2026.
Lowest$12.17Roseland Community Hospital
Median$88.82half pay less
Highest$448.94in this market
Difference36.9×highest vs lowest
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Chicago-Naperville-Elgin, IL-IN.
median
Lowest $12.17Highest $448.94
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Roseland Community Hospital lowest Chicago, IL · (773) 995-3000 Ammonia level | $12.17 | $92.00 | $12.17–$101.20 | 87% | Jul 1, 2026 source file |
| Uchicago Medicine AdventHealth Glenoaks Glendale Heights, IL · (630) 545-8000 HC AMMONIA LEVEL | $12.75 | $51.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale Hinsdale, IL · (630) 856-9000 HC AMMONIA LEVEL | $12.75 | $51.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange La Grange, IL · (708) 352-1200 HC AMMONIA LEVEL | $12.75 | $51.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook Bolingbrook, IL · (630) 312-5000 HC AMMONIA LEVEL | $12.75 | $51.00 | — | 75% | Apr 1, 2026 source file |
| Mercy Medical Center Aurora, IL · (630) 859-2222 AMMONIUM 24 HOUR URINE | $14.00 | $255.00 | $8.74–$255.00 | 95% | Sep 1, 2026 source file |
| Saint Francis Hospital Evanston, IL · (847) 316-4000 HC ASSAY OF AMMONIA | $14.00 | $135.00 | $8.74–$117.88 | 90% | Sep 1, 2026 source file |
| Saint Joseph Medical Center - Joliet Joliet, IL · (815) 725-7133 AMMONIA | $14.00 | $253.00 | $8.41–$253.00 | 94% | Sep 1, 2026 source file |
| Saint Joseph Medical Center - Joliet Joliet, IL · (815) 725-7133 AMMONIUM 24 HOUR URINE | $14.00 | $253.00 | $8.41–$253.00 | 94% | Sep 1, 2026 source file |
| Mercy Medical Center Aurora, IL · (630) 859-2222 AMMONIA | $14.00 | $255.00 | $8.74–$255.00 | 95% | Sep 1, 2026 source file |
| Franciscan Health Munster Munster, IN · (219) 922-4200 Ammonia | $20.66 | $97.00 | $11.51–$109.00 | 79% | — source file |
| John H. Stroger, Jr. Hospital Chicago, IL · (312) 864-6000 AMMONIA | $25.90 | $37.00 | $4.09–$29.60 | 30% | — source file |
| Franciscan Health Rensselaer Rensselaer, IN · (219) 866-5141 Ammonia | $27.57 | $77.00 | $13.04–$65.57 | 64% | — source file |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Ref Stone Risk Panel, Ammonia (Q) | $29.40 | $42.00 | $2.90–$42.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Ref Stone Risk Panel, Ammonia (Q) | $29.40 | $42.00 | $8.11–$42.00 | 30% | Apr 1, 2026 source file |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Ref Stone Risk Panel, Ammonia (Q) | $29.40 | $42.00 | $6.97–$42.00 | 30% | Apr 1, 2026 source file |
| Gottlieb Memorial Hospital Melrose Park, IL · (708) 681-3200 Ammonia (Qstone) | $31.54 | $166.00 | $70.72–$139.11 | 81% | Mar 31, 2026 source file |
| MacNeal Hospital Berwyn, IL · (708) 783-9100 Ammonia (Qstone) | $31.54 | $166.00 | $31.54–$229.91 | 81% | Mar 31, 2026 source file |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Ref Kidney Stone, Ammonia Assay (Lc) | $35.70 | $51.00 | $9.84–$51.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Ref Kidney Stone, Ammonia Assay (Lc) | $35.70 | $51.00 | $9.33–$51.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Ref Kidney Stone, Ammonia Assay (Lc) | $35.70 | $51.00 | $9.69–$51.00 | 30% | Apr 1, 2026 source file |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Ref Kidney Stone, Ammonia Assay (Lc) | $35.70 | $51.00 | $9.89–$51.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Ref Kidney Stone, Ammonia Assay (Lc) | $35.70 | $51.00 | $3.52–$51.00 | 30% | Apr 1, 2026 source file |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Ref Kidney Stone, Ammonia Assay (Lc) | $35.70 | $51.00 | $8.16–$51.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Marianjoy Rehabilitation Hospital Wheaton, IL HB Ref Kidney Stone, Ammonia Assay (Lc) | $35.70 | $51.00 | $21.42–$51.00 | 30% | Apr 1, 2026 source file |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Ref Kidney Stone, Ammonia Assay (Lc) | $35.70 | $51.00 | $8.47–$51.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Ref Kidney Stone, Ammonia Assay (Lc) | $35.70 | $51.00 | $7.60–$51.00 | 30% | Apr 1, 2026 source file |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Ref Stone Risk Panel, Ammonia (Q) | $37.80 | $54.00 | $9.83–$54.00 | 30% | Apr 1, 2026 source file |
| Loyola University Medical Center Maywood, IL · (708) 216-9000 Ammonia (Qstone) | $38.18 | $166.00 | $72.87–$174.96 | 77% | Mar 31, 2026 source file |
| Methodist Hospital-Southlake Merrillville, IN · (219) 886-4000 HC Ammonia | $38.50 | $55.00 | $14.57–$48.95 | 30% | — source file |
| The Methodist Hospitals Gary, IN · (219) 886-4000 HC Ammonia | $38.50 | $55.00 | $14.57–$48.95 | 30% | — source file |
| Franciscan Health Dyer Dyer, IN · (219) 865-2141 Ammonia | $41.31 | $153.00 | $13.04–$114.75 | 73% | — source file |
| Gottlieb Memorial Hospital Melrose Park, IL · (708) 681-3200 Ammonia (Amon) | $43.13 | $227.00 | $96.70–$190.23 | 81% | Mar 31, 2026 source file |
| MacNeal Hospital Berwyn, IL · (708) 783-9100 Ammonia (Amon) | $43.13 | $227.00 | $2.51–$19.80 | 81% | Mar 31, 2026 source file |
| Presence Saint Joseph Hospital - Chicago Chicago, IL · (773) 665-3000 HC AMMONIA-BLOOD | $44.55 | $135.00 | $14.57–$59.93 | 67% | — source file |
| Presence Saint Joseph Hospital - Chicago Chicago, IL · (773) 665-3000 HC AMMONIA-BLOOD | $44.55 | $135.00 | $14.57–$59.93 | 67% | — source file |
| Loyola University Medical Center Maywood, IL · (708) 216-9000 Ammonia (Amon) | $52.21 | $227.00 | $14.20 | 77% | Mar 31, 2026 source file |
| Northwest Health - Porter Valparaiso, IN · (219) 983-8300 Ammonia Level | $61.83 | $229.00 | $12.85–$192.36 | 73% | Apr 1, 2026 source file |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Ammonia | $63.70 | $91.00 | $16.65–$91.00 | 30% | Apr 1, 2026 source file |
| Morris Hospital Morris, IL · (815) 942-2932 Ammonia level | $64.24 | $267.00 | $14.57–$226.95 | 76% | Jun 30, 2026 source file |
| Franciscan Health Crown Point Crown Point, IN · (219) 757-6100 Ammonia | $68.11 | $264.00 | $264.00 | 74% | — source file |
| Northwestern Medicine Marianjoy Rehabilitation Hospital Wheaton, IL HB Ammonia | $71.40 | $102.00 | $42.84–$102.00 | 30% | Apr 1, 2026 source file |
| Louis A Weiss Memorial Hospital Chicago, IL · (773) 878-8700 82140 AMMONIA | $73.32 | $215.64 | $11.69–$140.17 | 66% | Mar 17, 2025 source file |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Ammonia | $83.30 | $119.00 | $22.61–$119.00 | 30% | Apr 1, 2026 source file |
| Resilience Healthcare West Suburban Medical Center Oak Park, IL · (708) 383-6200 82140 AMMONIA | $88.82 | $261.23 | $11.69–$169.80 | 66% | Mar 17, 2025 source file |
| Resilience Healthcare West Suburban Medical Center Oak Park, IL · (708) 383-6200 Ammonia Level | $88.82 | $261.23 | $11.69–$169.80 | 66% | Mar 17, 2025 source file |
| Louis A Weiss Memorial Hospital Chicago, IL · (773) 878-8700 Ammonia Level | $88.82 | $261.23 | $11.69–$169.80 | 66% | Mar 17, 2025 source file |
| Advocate Trinity Hospital Chicago, IL · (773) 967-5002 AMMONIA | $90.00 | $180.00 | $14.57–$144.00 | 50% | Nov 4, 2025 source file |
| Advocate Childrens Hospital Park Ridge Park Ridge, IL AMMONIA | $90.00 | $180.00 | $14.57–$160.20 | 50% | Nov 4, 2025 source file |
| Advocate Illinois Masonic Medical Center Chicago, IL · (773) 975-1600 SRDP AMMONIA URINE | $90.00 | $180.00 | $14.57–$146.52 | 50% | Nov 4, 2025 source file |
| Advocate Illinois Masonic Medical Center Chicago, IL · (773) 975-1600 AMMONIA | $90.00 | $180.00 | $14.57–$146.52 | 50% | Nov 4, 2025 source file |
| Advocate South Suburban Hospital Hazel Crest, IL AMMONIA | $90.00 | $180.00 | $14.57–$175.32 | 50% | Nov 4, 2025 source file |
| Advocate South Suburban Hospital Hazel Crest, IL SRDP AMMONIA URINE | $90.00 | $180.00 | $14.57–$175.32 | 50% | Nov 4, 2025 source file |
| Advocate Condell Medical Center Libertyville, IL · (847) 362-2900 SRDP AMMONIA URINE | $90.00 | $180.00 | $14.57–$144.00 | 50% | Nov 4, 2025 source file |
| Advocate Condell Medical Center Libertyville, IL · (847) 362-2900 AMMONIA | $90.00 | $180.00 | $14.57–$144.00 | 50% | Nov 4, 2025 source file |
| Advocate Good Samaritan Hospital Downers Grove, IL · (630) 275-5900 AMMONIA | $90.00 | $180.00 | $14.57–$144.00 | 50% | Nov 4, 2025 source file |
| Advocate Sherman Hospital Elgin, IL · (847) 742-9800 AMMONIA | $90.00 | $180.00 | $14.57–$162.00 | 50% | Nov 4, 2025 source file |
| Advocate Sherman Hospital Elgin, IL · (847) 742-9800 SRDP AMMONIA URINE | $90.00 | $180.00 | $14.57–$162.00 | 50% | Nov 4, 2025 source file |
| Advocate Lutheran General Hospital Park Ridge, IL · (847) 723-2210 SRDP AMMONIA URINE | $90.00 | $180.00 | $14.57–$160.20 | 50% | Nov 4, 2025 source file |
| Advocate Lutheran General Hospital Park Ridge, IL · (847) 723-2210 AMMONIA | $90.00 | $180.00 | $14.57–$160.20 | 50% | Nov 4, 2025 source file |
| Advocate Good Shepherd Hospital Barrington, IL · (847) 381-9600 AMMONIA | $90.00 | $180.00 | $14.57–$144.00 | 50% | Nov 4, 2025 source file |
| Advocate Good Shepherd Hospital Barrington, IL · (847) 381-9600 SRDP AMMONIA URINE | $90.00 | $180.00 | $14.57–$144.00 | 50% | Nov 4, 2025 source file |
| Advocate Childrens Hospital Park Ridge Park Ridge, IL SRDP AMMONIA URINE | $90.00 | $180.00 | $14.57–$160.20 | 50% | Nov 4, 2025 source file |
| Advocate Trinity Hospital Chicago, IL · (773) 967-5002 SRDP AMMONIA URINE | $90.00 | $180.00 | $14.57–$144.00 | 50% | Nov 4, 2025 source file |
| Advocate Childrens Hospital Oak Lawn Oak Lawn, IL AMMONIA | $90.00 | $180.00 | $14.57–$144.00 | 50% | Nov 4, 2025 source file |
| Advocate Christ Medical Center Oak Lawn, IL · (708) 684-8000 AMMONIA | $90.00 | $180.00 | $14.57–$144.00 | 50% | Nov 4, 2025 source file |
| Advocate Christ Medical Center Oak Lawn, IL · (708) 684-8000 SRDP AMMONIA URINE | $90.00 | $180.00 | $14.57–$144.00 | 50% | Nov 4, 2025 source file |
| Advocate Childrens Hospital Oak Lawn Oak Lawn, IL SRDP AMMONIA URINE | $90.00 | $180.00 | $14.57–$144.00 | 50% | Nov 4, 2025 source file |
| Advocate Good Samaritan Hospital Downers Grove, IL · (630) 275-5900 SRDP AMMONIA URINE | $90.00 | $180.00 | $14.57–$144.00 | 50% | Nov 4, 2025 source file |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Ammonia, Urine | $92.00 | $92.00 | — | — | Apr 1, 2026 source file |
| Humboldt Park Health Chicago, IL · (773) 292-8200 Ammonia level | $94.08 | $336.00 | $336.00 | 72% | Aug 24, 2026 source file |
| La Rabida Children's Hospital Chicago, IL · (773) 363-6700 AMMONIA | $94.38 | $94.38 | — | — | Apr 1, 2026 source file |
| The Methodist Hospitals Gary, IN · (219) 886-4000 Sr/Ammonia | $95.20 | $136.00 | $14.57–$121.04 | 30% | — source file |
| Methodist Hospital-Southlake Merrillville, IN · (219) 886-4000 Sr/Ammonia | $95.20 | $136.00 | $14.57–$121.04 | 30% | — source file |
| Community First Medical Center Chicago, IL · (773) 282-7000 Ammonia level | $115.75 | $231.50 | $11.83–$231.50 | 50% | Apr 1, 2026 source file |
| Mercyhealth Hospital & Medical Center - Harvard Harvard, IL · (815) 943-5431 CHG ASSAY OF AMMONIA | $122.24 | $162.99 | — | 25% | Mar 1, 2026 source file |
| Mercyhealth Crystal Lake Hospital & Medical Center Crystal Lake, IL · (792) 220-5500 CHG ASSAY OF AMMONIA | $124.04 | $165.38 | — | 25% | Mar 1, 2026 source file |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Ref Supersaturation Profile, 24 Hour Urine, Ammonia (Mayo) | $124.60 | $178.00 | $34.53–$178.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Ref Supersaturation Profile, 24 Hour Urine, Ammonia (Mayo) | $124.60 | $178.00 | $12.28–$178.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Ref Supersaturation Profile, 24 Hour Urine, Ammonia (Mayo) | $124.60 | $178.00 | $34.35–$178.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Ref Supersaturation Profile, 24 Hour Urine, Ammonia (Mayo) | $124.60 | $178.00 | $26.52–$178.00 | 30% | Apr 1, 2026 source file |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Ref Supersaturation Profile, 24 Hour Urine, Ammonia (Mayo) | $124.60 | $178.00 | $28.48–$178.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Ref Supersaturation Profile, 24 Hour Urine, Ammonia (Mayo) | $124.60 | $178.00 | $32.57–$178.00 | 30% | Apr 1, 2026 source file |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Ref Supersaturation Profile, 24 Hour Urine, Ammonia (Mayo) | $124.60 | $178.00 | $29.55–$178.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Ref Supersaturation Profile, 24 Hour Urine, Ammonia (Mayo) | $124.60 | $178.00 | $33.82–$178.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Marianjoy Rehabilitation Hospital Wheaton, IL HB Ref Supersaturation Profile, 24 Hour Urine, Ammonia (Mayo) | $124.60 | $178.00 | $74.76–$178.00 | 30% | Apr 1, 2026 source file |
| Shriners Childrens - Chicago Chicago, IL · (773) 622-5400 AMMONIA LEVEL | $125.00 | $125.00 | $12.96–$26.01 | — | — source file |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL Ammonia* | $125.45 | $193.00 | $26.06–$105.38 | 35% | — source file |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL Ammonia* | $125.45 | $193.00 | $26.06–$105.38 | 35% | — source file |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Ref Litholink 24 Hr Urine Panel, Ammonia (Lc) | $130.90 | $187.00 | $35.53–$187.00 | 30% | Apr 1, 2026 source file |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Ref Litholink 24 Hr Urine Panel, Ammonia (Lc) | $130.90 | $187.00 | $29.92–$187.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Ref Litholink 24 Hr Urine Panel, Ammonia (Lc) | $130.90 | $187.00 | $12.90–$187.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Ref Ammonia, Plasma (Q) | $130.90 | $187.00 | $12.90–$187.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Ref Litholink 24 Hr Urine Panel, Ammonia (Lc) | $130.90 | $187.00 | $34.22–$187.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Marianjoy Rehabilitation Hospital Wheaton, IL HB Ref Litholink 24 Hr Urine Panel, Ammonia (Lc) | $130.90 | $187.00 | $78.54–$187.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Ref Ammonia, Plasma (Q) | $130.90 | $187.00 | $34.22–$187.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Ref Litholink 24 Hr Urine Panel, Ammonia (Lc) | $130.90 | $187.00 | $36.09–$187.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Marianjoy Rehabilitation Hospital Wheaton, IL HB Ref Ammonia, Plasma (Q) | $130.90 | $187.00 | $78.54–$187.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Ref Ammonia, Plasma (Q) | $130.90 | $187.00 | $27.86–$187.00 | 30% | Apr 1, 2026 source file |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Ref Litholink 24 Hr Urine Panel, Ammonia (Lc) | $130.90 | $187.00 | $31.04–$187.00 | 30% | Apr 1, 2026 source file |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Ref Ammonia, Plasma (Q) | $130.90 | $187.00 | $31.04–$187.00 | 30% | Apr 1, 2026 source file |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Ref Ammonia, Plasma (Q) | $130.90 | $187.00 | $29.92–$187.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Ref Ammonia, Plasma (Q) | $130.90 | $187.00 | $36.09–$187.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Ref Ammonia, Plasma (Q) | $130.90 | $187.00 | $35.53–$187.00 | 30% | Apr 1, 2026 source file |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Ref Ammonia, Plasma (Q) | $130.90 | $187.00 | $36.28–$187.00 | 30% | Apr 1, 2026 source file |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Ref Litholink 24 Hr Urine Panel, Ammonia (Lc) | $130.90 | $187.00 | $36.28–$187.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Ref Litholink 24 Hr Urine Panel, Ammonia (Lc) | $130.90 | $187.00 | $27.86–$187.00 | 30% | Apr 1, 2026 source file |
| The Methodist Hospitals Gary, IN · (219) 886-4000 Blood Ammonia | $133.00 | $190.00 | $14.57–$169.10 | 30% | — source file |
| Methodist Hospital-Southlake Merrillville, IN · (219) 886-4000 Blood Ammonia | $133.00 | $190.00 | $14.57–$169.10 | 30% | — source file |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Ammonia | $145.60 | $208.00 | $33.28–$208.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Ammonia | $147.00 | $210.00 | $31.29–$210.00 | 30% | Apr 1, 2026 source file |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL R Ammonia; Urine (P) | $148.20 | $228.00 | $30.78–$124.49 | 35% | — source file |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL R Ammonia; Urine (P) | $148.20 | $228.00 | $30.78–$124.49 | 35% | — source file |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Ammonia | $174.30 | $249.00 | $21.29–$348.00 | 30% | Apr 1, 2026 source file |
| Northwest Community Hospital Arlington Heights, IL · (847) 618-1000 Hb Assay Of Ammonia | $182.00 | $182.00 | — | — | Apr 1, 2026 source file |
| Endeavor Health Highland Park Hospital Highland Park, IL HB AMMONIA* | $193.00 | $193.00 | — | — | Apr 1, 2026 source file |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 HB AMMONIA* | $193.00 | $193.00 | — | — | Apr 1, 2026 source file |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB AMMONIA* | $193.00 | $193.00 | — | — | Apr 1, 2026 source file |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Ammonia | $225.40 | $322.00 | $62.15–$322.00 | 30% | Apr 1, 2026 source file |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Ammonia | $225.40 | $322.00 | $53.45–$322.00 | 30% | Apr 1, 2026 source file |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB R AMMONIA; URINE (P) | $228.00 | $228.00 | — | — | Apr 1, 2026 source file |
| Endeavor Health Highland Park Hospital Highland Park, IL HB R AMMONIA; URINE (P) | $228.00 | $228.00 | — | — | Apr 1, 2026 source file |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 HB R AMMONIA; URINE (P) | $228.00 | $228.00 | — | — | Apr 1, 2026 source file |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Ammonia | $243.60 | $348.00 | $24.01–$348.00 | 30% | Apr 1, 2026 source file |
| Ann & Robert H. Lurie Children's Hospital of Chicago Chicago, IL · (312) 227-4000 H AMMONIA PLASMA | $253.40 | $362.00 | $61.54–$8,500.00 | 30% | — source file |
| Ingalls Memorial Hospital Harvey, IL · (708) 333-2300 Hc Ammonia | $270.00 | $270.00 | — | — | Apr 1, 2026 source file |
| Uchicago Medicine Northwest Indiana Crown Point, IN · (312) 755-4706 HC AMMONIA | $270.00 | $270.00 | — | — | Apr 1, 2026 source file |
| Jackson Park Hospital Foundation Chicago, IL · (773) 947-7500 AMMONIA LEVEL | $289.26 | $361.57 | — | 20% | — source file |
| Edward Hospital Naperville, IL · (630) 527-3000 HC AMMONIA | $294.00 | $294.00 | — | — | Apr 1, 2026 source file |
| Elmhurst Memorial Hospital Elmhurst, IL · (331) 221-1000 HC AMMONIA | $294.00 | $294.00 | — | — | Apr 1, 2026 source file |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Ammonia | $385.00 | $385.00 | — | — | Apr 1, 2026 source file |
| Vista Medical Center East Waukegan, IL · (847) 360-3000 AMMONIA | $448.94 | $448.94 | $14.57–$23.45 | — | — source file |
Outpatient: lowest $12.17, median $88.82, highest $448.94 — a 36.9× difference within the same market.
As an inpatient, the same code is billed by 40 facilities here, median $90.00. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At 42 of 46 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 4 it is below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.
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.