Mumps immunity test cost in St. Louis, MO — inpatient
In St. Louis, MO-IL, 10 hospitals list a cash price for mumps immunity blood test as an inpatient: from $45.22 to $138.98, with a median of $110.52. The lowest listed price is at Mercy Rehabilitation Hospital South — $65.30 less than the median here. Across Missouri, the median is $59.09 at 62 hospitals.
Cash prices at 10 facilities across 10 cities for code 86735, as an inpatient (admitted to hospital) . Collected Sep 27, 2026; the hospital files themselves were last updated between Feb 6, 2026 and Mar 16, 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 Rehabilitation Hospital South lowest Louis, MO MUMPS ANTIBODY File of Mar 16, 2026 · source file | $45.22 | $45.22 | $45.22 | — |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 MUMPS TITER, IGM(REF) source file | $46.20 | $66.00 | $41.05–$3,396.04 | 30% |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 MUMPS AB source file | $57.93 | $96.55 | $96.55 | 40% |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 MUMPS TITER IGG(REF) source file | $91.00 | $130.00 | $80.86–$3,396.04 | 30% |
| Community Hospital of Staunton Staunton, IL · (618) 635-2200 MUMPS ANTIBODY File of Feb 9, 2026 · source file | $92.25 | $184.50 | $156.82–$167.90 | 50% |
| St Josephs Hospital Hospital Sisters Third Order of St Francis Breese, IL · (618) 526-4511 HC MUMPS AB source file | $110.16 | $153.00 | $8.09–$153.00 | 28% |
| St Elizabeths Hospital of the Hospital Sisters of the Third Order of St Francis O'Fallon, IL · (618) 234-2120 HC MUMPS AB source file | $110.88 | $154.00 | $8.09–$154.00 | 28% |
| Hshs Holy Family Hospital Greenville, IL · (618) 664-1230 MUMPS ANTIBODY source file | $114.48 | $159.00 | $8.50–$159.00 | 28% |
| St Josephs Hospital of the Hospital Sisters of the Third Order of St Francis Highland, IL · (618) 651-2600 HC MUMPS AB source file | $119.52 | $166.00 | $18.83–$166.00 | 28% |
| Anderson Hospital Maryville, IL · (618) 288-5711 MUMPS ANTIBODY File of Feb 6, 2026 · source file | $123.05 | $246.10 | $184.58–$221.49 | 50% |
| Mercy Rehabilitation Hospital St. Louis Chesterfield, MO MUMPS ANTIBODY File of Mar 16, 2026 · source file | $138.98 | $138.98 | $138.98 | — |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 Q8624 MUMPSAB IGG IA source file | $353.31 | $588.85 | $588.85 | 40% |
Inpatient: lowest $45.22, median $110.52, highest $138.98 — a 3.1× difference within the same market.
As an outpatient, the same code is billed by 15 facilities here, median $88.66 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 8 of 10 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 3 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 mumps antibody test shows whether you are immune to mumps. It is often ordered with measles and rubella tests for school, work or travel when vaccine records are missing.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.