Lactic acid test cost in St. Louis, MO
In St. Louis, MO-IL, 17 hospitals list a cash price for lactate (lactic acid) blood test: from $21.83 to $157.68, with a median of $87.12. The lowest listed price is at Ranken Jordan Pediatric Bridge Hospital — $65.29 less than the median here. Across Missouri, the median is $87.50 at 64 hospitals.
Cash prices at 17 facilities across 15 cities for code 83605, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 27, 2026; the hospital files themselves were last updated between Feb 6, 2026 and Apr 24, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in St. Louis, MO-IL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Ranken Jordan Pediatric Bridge Hospital lowest Maryland Heights, MO · (314) 872-6400 Lactic Acid | $21.83 | $27.28 | — | 20% | Apr 24, 2026 source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 Lactic Acid | $47.45 | $73.00 | $4.75–$73.00 | 35% | — source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 Lactic Acid CSF | $47.45 | $73.00 | $4.75–$73.00 | 35% | — source file |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 LACTIC ACID | $63.15 | $105.25 | $105.25 | 40% | — source file |
| Mercy Hospital Jefferson Festus, MO · (636) 933-1000 POC Lactic Acid | $63.70 | $98.00 | $6.37–$98.00 | 35% | — source file |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 LACTIC ACID | $64.40 | $92.00 | $33.12–$131.43 | 30% | — source file |
| Touchette Regional Hospital Cahokia Heights, IL · (618) 332-3060 Lactate (lactic acid) | $73.78 | $119.00 | $4.52–$113.00 | 38% | — source file |
| Mercy Hospital Washington Washington, MO · (636) 239-8000 Lactic Acid CSF | $79.95 | $123.00 | $8.00–$110.70 | 35% | — source file |
| Mercy Hospital Washington Washington, MO · (636) 239-8000 Lactic Acid | $79.95 | $123.00 | $10.41–$18.07 | 35% | — source file |
| Mercy Hospital Jefferson Festus, MO · (636) 933-1000 Lactic Acid | $79.95 | $123.00 | $8.00–$123.00 | 35% | — source file |
| Mercy Hospital Jefferson Festus, MO · (636) 933-1000 Lactic Acid CSF | $79.95 | $123.00 | $8.00–$123.00 | 35% | — source file |
| Shriners Childrens - St Louis Saint Louis, MO · (314) 432-3600 ASSAY OF LACTIC ACID | $82.00 | $82.00 | $5.72–$18.35 | — | — source file |
| St Elizabeths Hospital of the Hospital Sisters of the Third Order of St Francis O'Fallon, IL · (618) 234-2120 ASSAY OF LACTIC ACID | $87.12 | $121.00 | $8.40–$121.00 | 28% | — source file |
| Community Hospital of Staunton Staunton, IL · (618) 635-2200 LACTIC ACID LEVEL | $88.00 | $176.00 | $50.88–$160.16 | 50% | Feb 9, 2026 source file |
| Mercy Hospital Washington Washington, MO · (636) 239-8000 POC Lactic Acid | $96.20 | $148.00 | $9.62–$133.20 | 35% | — source file |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 Lactic Acid CSF | $106.60 | $164.00 | $11.57–$16.03 | 35% | — source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 POC Lactic Acid | $107.90 | $166.00 | $10.79–$166.00 | 35% | — source file |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 POC Lactic Acid | $109.20 | $168.00 | $11.57–$16.03 | 35% | — source file |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 Lactic Acid | $109.20 | $168.00 | $11.57–$16.03 | 35% | — source file |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 LACTIC ACID BACKUP NOVA | $118.30 | $169.00 | $60.84–$241.43 | 30% | — source file |
| Mercy Hospital Jefferson Festus, MO · (636) 933-1000 D Lactate | $118.30 | $182.00 | $10.41–$26.03 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO · (314) 251-6000 Lactic Acid CSF | $120.25 | $185.00 | $12.03–$185.00 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO · (314) 251-6000 POC Lactic Acid | $120.25 | $185.00 | $12.03–$185.00 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO · (314) 251-6000 Lactic Acid | $120.25 | $185.00 | $12.03–$185.00 | 35% | — source file |
| Mercy Hospital Washington Washington, MO · (636) 239-8000 D Lactate | $126.10 | $194.00 | $10.41–$18.07 | 35% | — source file |
| Jersey Community Hospital Jerseyville, IL · (618) 498-6402 Lactic Acid (Venous) | $136.00 | $136.00 | $71.13–$115.60 | — | — source file |
| Hshs Holy Family Hospital Greenville, IL · (618) 664-1230 ASSAY OF LACTIC ACID | $136.80 | $190.00 | $8.82–$190.00 | 28% | — source file |
| Anderson Hospital Maryville, IL · (618) 288-5711 LACTIC ACID LEVEL | $137.65 | $275.30 | $10.82–$247.77 | 50% | Feb 6, 2026 source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 D Lactate | $138.45 | $213.00 | $10.41–$26.03 | 35% | — source file |
| St Josephs Hospital Hospital Sisters Third Order of St Francis Breese, IL · (618) 526-4511 HC LACTATE/LACTIC ACID | $146.16 | $203.00 | $8.40–$203.00 | 28% | — source file |
| St Josephs Hospital of the Hospital Sisters of the Third Order of St Francis Highland, IL · (618) 651-2600 HC LACTATE/LACTIC ACID | $157.68 | $219.00 | $19.56–$219.00 | 28% | — source file |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 D Lactate | $193.70 | $298.00 | $11.57–$16.03 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO · (314) 251-6000 D Lactate | $443.95 | $683.00 | $10.41–$26.03 | 35% | — source file |
Outpatient: lowest $21.83, median $87.12, highest $157.68 — a 7.2× difference within the same market.
As an inpatient, the same code is billed by 13 facilities here, median $88.00. 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 13 of 16 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 1 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
A lactic acid test measures lactate in the blood. It is used mainly in the emergency department and hospital to look for sepsis, shock or poor blood flow to tissues.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.