Flu test cost in Saint Louis, MO

Prices at 5 hospitals in Saint Louis, MO, from their machine-readable files. Here the median cash price is $105 — 73% above the US median ($61), roughly 6.3× the Medicare rate.

Lowest cash prices

HospitalLocationCashInsurerCMS ratingER waitReadmit
St Louis Childrens Hospital Saint Louis, MO $27 $30
Missouri Baptist Medical Center Saint Louis, MO $46 $40 ★ 5/5 252 min 14.8%
Mercy Hospital South Saint Louis, MO $105 $16 ★ 2/5 246 min 15.8%
Mercy Hospital St Louis Saint Louis, MO $113 $16 ★ 4/5 217 min 15.1%
Shriners Hospitals for Children Saint Louis, MO $120 $13

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 June 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)
$120
Cash / self-pay
$105
Insurer-negotiated
$16
Medicare pays
$17
$34$117
Median cash $105  ·  Medicare $17  ·  bar = typical cash range (10th–90th percentile)
Is this a fair price?
1× Medicarefair ≈2×5×+

Typical cash price here is $105 — about 6.3× the Medicare rate ($17). High vs Medicare. A fair cash price is usually within ~2× Medicare ($33).

💡 Asking for the cash price instead of the $120 list price could save about $15 (13%).

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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.

All Flu test prices in Missouri → · All Flu test prices (national) · All hospitals in Saint Louis