TPO antibody test cost in St. Louis, MO
In St. Louis, MO-IL, 9 hospitals list a cash price for thyroid peroxidase (TPO) antibody test: from $39.00 to $409.73, with a median of $108.55. The lowest listed price is at Mercy Hospital Jefferson — $69.55 less than the median here. Across Missouri, the median is $80.36 at 28 hospitals.
Cash prices at 9 facilities across 7 cities for code 86376, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between — and —.
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 |
|---|---|---|---|---|---|
| Mercy Hospital Jefferson lowest Festus, MO Thyroid Peroxidase Ab Each | $39.00 | $60.00 | $3.90–$60.00 | 35% | — source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 Liver Kidney Microsomal Ab Each | $47.45 | $73.00 | $13.10–$32.74 | 35% | — source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 Thyroid Peroxidase Ab Each | $47.45 | $73.00 | $13.10–$32.74 | 35% | — source file |
| Mercy Hospital Jefferson Festus, MO Microsomal Ab Each | $74.10 | $114.00 | $7.41–$114.00 | 35% | — source file |
| Mercy Hospital Jefferson Festus, MO Liver Kidney Microsomal Ab Each | $74.10 | $114.00 | $13.10–$32.74 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Liver Kidney Microsomal Ab Each | $81.25 | $125.00 | $13.10–$24.63 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Thyroid Peroxidase Ab Each | $81.25 | $125.00 | $13.10–$24.63 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Microsomal Ab Each | $81.25 | $125.00 | $13.10–$24.63 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO Microsomal Ab Each | $92.95 | $143.00 | $13.10–$32.74 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO Thyroid Peroxidase Ab Each | $92.95 | $143.00 | $9.30–$143.00 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO Liver Kidney Microsomal Ab Each | $92.95 | $143.00 | $9.30–$143.00 | 35% | — source file |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 Thyroid Peroxidase Ab Each | $108.55 | $167.00 | $14.55–$20.61 | 35% | — source file |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 Liver Kidney Microsomal Ab Each | $108.55 | $167.00 | $14.55–$20.61 | 35% | — source file |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 Microsomal Ab Each | $108.55 | $167.00 | $10.86–$167.00 | 35% | — source file |
| Shriners Childrens - St Louis Saint Louis, MO · (314) 432-3600 MICROSOMAL ANTIBODY EACH | $114.30 | $114.30 | $7.99–$24.99 | — | — source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 Microsomal Ab Each | $141.05 | $217.00 | $14.11–$217.00 | 35% | — source file |
| St Elizabeths Hospital of the Hospital Sisters of the Third Order of St Francis O'Fallon, IL HC MICROSOMAL AB | $155.52 | $216.00 | $8.09–$216.00 | 28% | — source file |
| Hshs Holy Family Hospital Greenville, IL · (618) 664-1230 HC MICROSOMAL AB-90 | $156.96 | $218.00 | $8.50–$218.00 | 28% | — source file |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 Q90123 MICROSOMAL AB | $409.73 | $682.88 | $682.88 | 40% | — source file |
Outpatient: lowest $39.00, median $108.55, highest $409.73 — a 10.5× difference within the same market.
As an inpatient, the same code is billed by 5 facilities here, median $156.96. 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 4 of 9 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
The TPO antibody test looks for antibodies against a thyroid enzyme. They are found in most people with Hashimoto's thyroiditis and many with Graves' disease.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.