CA 19-9 test cost in St. Louis, MO
In St. Louis, MO-IL, 11 hospitals list a cash price for CA 19-9 blood test (tumor marker): from $35.10 to $482.81, with a median of $116.70. The lowest listed price is at Mercy Hospital St Louis and 2 other hospitals — $81.60 less than the median here. Across Missouri, the median is $105.30 at 61 hospitals.
- The median here, $116.70, is 19% above the US median of $98.00.
- That is 5.6× Medicare's 2026 national rate for the same service ($20.81).
- St. Louis, MO has the lowest median of 2 metro areas in Missouri with at least 10 hospitals pricing this code.
- Every hospital here lists a cash price below its full list price.
Cash prices at 11 facilities across 10 cities for code 86301, 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 Jun 10, 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 |
|---|---|---|---|---|
| Mercy Hospital St Louis lowest Saint Louis, MO · (314) 251-6000 Ca 19 9 File of Jun 4, 2026 · source file | $35.10 | $54.00 | $18.73–$46.82 | 35% |
| Mercy Hospital South lowest Saint Louis, MO · (314) 525-1000 Ca 19 9 File of Jun 10, 2026 · source file | $35.10 | $54.00 | $3.51–$54.00 | 35% |
| Mercy Hospital Jefferson lowest Festus, MO · (636) 933-1000 Ca 19 9 File of Jun 10, 2026 · source file | $35.10 | $54.00 | $3.51–$54.00 | 35% |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 CA 19-9 REF File of Mar 21, 2026 · source file | $102.90 | $147.00 | $52.92–$210.00 | 30% |
| Touchette Regional Hospital Cahokia Heights, IL · (618) 332-3060 Immunoassay for tumor antigen, quantitative; CA 19-9 File of Apr 13, 2026 · source file | $108.19 | $174.50 | $6.64–$166.00 | 38% |
| Anderson Hospital Maryville, IL · (618) 288-5711 CA19-9 File of Feb 6, 2026 · source file | $116.70 | $233.40 | $19.46–$210.06 | 50% |
| Mercy Hospital Washington Washington, MO · (636) 239-8000 Ca 19 9 File of Jun 10, 2026 · source file | $120.90 | $186.00 | $18.73–$35.22 | 35% |
| Community Hospital of Staunton Staunton, IL · (618) 635-2200 CA19-9 File of Feb 9, 2026 · source file | $123.15 | $246.30 | $71.21–$224.13 | 50% |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 Ca 19 9 File of Jun 10, 2026 · source file | $141.70 | $218.00 | $20.81–$29.48 | 35% |
| Hshs Holy Family Hospital Greenville, IL · (618) 664-1230 HC TUMOR AG CA 19-9 -90 File of Mar 24, 2026 · source file | $185.76 | $258.00 | $8.50–$258.00 | 28% |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 TUMOR AG CA 19-9 File of Mar 30, 2026 · source file | $482.81 | $804.69 | $804.69 | 40% |
Outpatient: lowest $35.10, median $116.70, highest $482.81 — a 13.8× difference within the same market.
As an inpatient, the same code is billed by 5 facilities here, median $123.15. 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 9 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 CA 19-9 test is, what the price covers and why prices differ: CA 19-9 test explained.