CRP blood test cost in St. Louis, MO
In St. Louis, MO-IL, 12 hospitals list a cash price for C-reactive protein (CRP) blood test, standard (not high-sensitivity): from $22.00 to $781.20, with a median of $57.03. The lowest listed price is at Ranken Jordan Home for Convalescent Crippled Children Hospital — $35.03 less than the median here. Across Missouri, the median is $49.40 at 27 hospitals.
Cash prices at 12 facilities across 10 cities for code 86140, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 24, 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 Home for Convalescent Crippled Children Hospital lowest Maryland Heights, MO · (314) 872-6400 Cardio CRP (R) | $22.00 | $27.50 | — | 20% | Apr 24, 2026 source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 C Reactive Protein | $24.70 | $38.00 | $4.66–$11.66 | 35% | — source file |
| Mercy Hospital Washington Washington, MO C Reactive Protein | $24.70 | $38.00 | $2.47–$34.20 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO C Reactive Protein | $24.70 | $38.00 | $2.47–$38.00 | 35% | — source file |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 C-REACTIVE PROTEIN | $30.65 | $51.08 | $51.08 | 40% | — source file |
| Shriners Childrens - St Louis Saint Louis, MO · (314) 432-3600 MEASUREMENT C-REACTIVE PROTEIN FOR DETECTION OF INFECTION OR INFLAMMATION | $40.60 | $40.60 | $2.81–$8.89 | — | — source file |
| Mercy Hospital Jefferson Festus, MO C Reactive Protein | $73.45 | $113.00 | $4.66–$11.66 | 35% | — source file |
| St Josephs Hospital of the Hospital Sisters of the Third Order of St Francis Highland, IL · (618) 651-2600 C-REACTIVE PROTEIN | $77.04 | $107.00 | $10.36–$107.00 | 28% | — source file |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 C Reactive Protein | $82.55 | $127.00 | $8.26–$127.00 | 35% | — source file |
| Hshs Holy Family Hospital Greenville, IL · (618) 664-1230 C-REACTIVE PROTEIN | $100.80 | $140.00 | $5.18–$140.00 | 28% | — source file |
| St Josephs Hospital Hospital Sisters Third Order of St Francis Breese, IL · (618) 526-4511 C-REACTIVE PROTEIN | $126.00 | $175.00 | $5.18–$175.00 | 28% | — source file |
| St Elizabeths Hospital of the Hospital Sisters of the Third Order of St Francis O'Fallon, IL HC C-REACTIVE PROTEIN | $781.20 | $1,085.00 | $5.18–$1,085.00 | 28% | — source file |
Outpatient: lowest $22.00, median $57.03, highest $781.20 — a 35.5× difference within the same market.
As an inpatient, the same code is billed by 8 facilities here, median $88.92. 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 8 of 11 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 CRP test measures C-reactive protein, which the liver makes when there is inflammation in the body. It is used to look for infection or inflammatory conditions and to follow how they respond to treatment.
What the price covers
The price usually covers the CRP test only. The blood draw is often billed separately.