Free T4 thyroid test cost in Saint Louis, MO

Prices at 6 hospitals in Saint Louis, MO, from their machine-readable files. Here the median cash price is $66 — 4% below the US median ($69), roughly 7.4× the Medicare rate.

Lowest cash prices

HospitalLocationCashInsurerCMS ratingER waitReadmit
Missouri Baptist Medical Center Saint Louis, MO $22 $21 ★ 5/5 262 min —
Christian Hospital Northeast Saint Louis, MO $44 $36 ★ 4/5 217 min —
Mercy Hospital St Louis Saint Louis, MO $48 $12 ★ 4/5 220 min —
Mercy Hospital South Saint Louis, MO $85 $12 ★ 2/5 254 min —
Shriners Hospitals for Children Saint Louis, MO $94 $11 — — —
St Louis Childrens Hospital Saint Louis, MO $160 $188 — — —

CMS rating = overall hospital star rating (1–5); ER wait = median minutes in the emergency department; Readmit = 30-day readmission rate (lower is better) — all from Medicare’s Care Compare; “—” = not reported. Data last updated October 2026. Prices from hospitals’ machine-readable files (45 CFR §180); Medicare benchmark from CMS PFS/CLFS/IPPS. Prices below 15% of the median are excluded as likely partial or mis-coded charges. Estimates — confirm with the hospital. Report an incorrect price.

Price comparison (median)

Chargemaster (list price)
$84
Cash / self-pay
$66
Insurer-negotiated
$17
Medicare pays
$9
$33$127
Median cash $66  ·  Medicare $9  ·  bar = typical cash range (10th–90th percentile)
Is this a fair price?
1× Medicarefair ≈2×5×+

Typical cash price here is $66 — about 7.4× the Medicare rate ($9). High vs Medicare. A fair cash price is usually within ~2× Medicare ($18).

💡 Asking for the cash price instead of the $84 list price could save about $18 (21%).

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Rough estimate from this procedure’s median insurer-negotiated rate. Your actual cost depends on your plan — confirm with your insurer.

Doctors who perform this in Saint Louis

Clinicians who reported the most Medicare volume for this service locally. This reflects Original Medicare activity only and is a volume signal, not a quality ranking.

ClinicianSpecialtyLocationMedicare services
Clay Semenkovich, MDEndocrinologySaint Louis, MO330
Jonathan Byrd, MDInternal MedicineSaint Louis, MO37
Jason Hand, M.D.Internal MedicineSaint Louis, MO36
Renee Amato, PAPhysician AssistantSaint Louis, MO28
Melissa Murray, MDFamily PracticeSaint Louis, MO25
Jennifer Sewing, D.O.Family PracticeSaint Louis, MO21
Catherine Lowder, MDInternal MedicineSaint Louis, MO20
Jaime Santos, MDFamily PracticeSaint Louis, MO18
Jack Galbraith, MDFamily PracticeSaint Louis, MO17
Howard Hsu, M.D.Internal MedicineSaint Louis, MO17

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All Free T4 thyroid test prices in Missouri → · All Free T4 thyroid test prices (national) · All hospitals in Saint Louis