CA-125 ovarian marker 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 $59 — 49% below the US median ($115), roughly 2.8× the Medicare rate.

Lowest cash prices

HospitalLocationCashInsurerCMS ratingER waitReadmit
Mercy Hospital St Louis Saint Louis, MO $35 $28 ★ 4/5 217 min 15.1%
Mercy Hospital South Saint Louis, MO $35 $28 ★ 2/5 246 min 15.8%
St Louis Childrens Hospital Saint Louis, MO $59 $69
Missouri Baptist Medical Center Saint Louis, MO $65 $50 ★ 5/5 252 min 14.8%
Christian Hospital Northeast Saint Louis, MO $65 $58 ★ 4/5 223 min 14.7%

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)
$98
Cash / self-pay
$59
Insurer-negotiated
$50
Medicare pays
$21
$35$65
Median cash $59  ·  Medicare $21  ·  bar = typical cash range (10th–90th percentile)
Is this a fair price?
1× Medicarefair ≈2×5×+

Typical cash price here is $59 — about 2.8× the Medicare rate ($21). On the higher side. A fair cash price is usually within ~2× Medicare ($42).

💡 Asking for the cash price instead of the $98 list price could save about $39 (40%).

Estimate what you’ll pay
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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 CA-125 ovarian marker test prices in Missouri → · All CA-125 ovarian marker test prices (national) · All hospitals in Saint Louis