Chlamydia test cost in St. Louis, MO
In St. Louis, MO-IL, 11 hospitals list a cash price for chlamydia test by nucleic acid amplification (NAAT, PCR-type): from $72.80 to $533.18, with a median of $153.36. The lowest listed price is at Mercy Hospital Lincoln — $80.56 less than the median here. Across Missouri, the median is $87.75 at 29 hospitals.
Cash prices at 11 facilities across 9 cities for code 87491, 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 Lincoln lowest Troy, MO · (636) 528-8551 Chlamydia Trachomatis Ampl Probe Other | $72.80 | $112.00 | $7.28–$112.00 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Chlamydia Trachomatis Ampl Probe | $74.10 | $114.00 | $7.41–$102.60 | 35% | — source file |
| Mercy Hospital Jefferson Festus, MO Chlamydia Trachomatis Ampl Probe | $92.30 | $142.00 | $31.58–$78.95 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO Chlamydia Trachomatis Ampl Probe Other | $113.75 | $175.00 | $11.38–$175.00 | 35% | — source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 Chlamydia Trachomatis Ampl Probe | $116.35 | $179.00 | $11.64–$179.00 | 35% | — source file |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 Chlamydia Trachomatis Ampl Probe | $120.90 | $186.00 | $35.09–$49.71 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO Chlamydia Trachomatis Ampl Probe | $127.40 | $196.00 | $12.74–$196.00 | 35% | — source file |
| St Josephs Hospital Hospital Sisters Third Order of St Francis Breese, IL · (618) 526-4511 CHLMYD TRACH DNA AMP PROBE | $153.36 | $213.00 | $30.13–$213.00 | 28% | — source file |
| Mercy Hospital Jefferson Festus, MO Chlamydia Trachomatis Ampl Probe Other | $155.35 | $239.00 | $15.54–$239.00 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Chlamydia Trachomatis Ampl Probe Other | $159.90 | $246.00 | $15.99–$221.40 | 35% | — source file |
| Shriners Childrens - St Louis Saint Louis, MO · (314) 432-3600 CHLMYD TRACH DNA AMP PROBE | $165.48 | $165.48 | $18.04–$60.30 | — | — source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 Chlamydia Trachomatis Ampl Probe Other | $186.55 | $287.00 | $18.66–$287.00 | 35% | — source file |
| St Elizabeths Hospital of the Hospital Sisters of the Third Order of St Francis O'Fallon, IL HC CHLAMYDIA TRACH AMP | $192.24 | $267.00 | $30.13–$267.00 | 28% | — source file |
| Hshs Holy Family Hospital Greenville, IL · (618) 664-1230 CHLMYD TRACH DNA AMP PROBE | $231.12 | $321.00 | $31.63–$321.00 | 28% | — source file |
| St Josephs Hospital of the Hospital Sisters of the Third Order of St Francis Highland, IL · (618) 651-2600 HC CHLAMYDIA TRACH AMP | $234.72 | $326.00 | $65.20–$326.00 | 28% | — source file |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 L180021 CTRACH AMPPR | $533.18 | $888.63 | $888.63 | 40% | — source file |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 Q70051 CHLMYD TRACH | $581.16 | $968.60 | $968.60 | 40% | — source file |
Outpatient: lowest $72.80, median $153.36, highest $533.18 — a 7.3× difference within the same market.
As an inpatient, the same code is billed by 7 facilities here, median $192.24. 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 9 of 11 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
This test looks for the genetic material of Chlamydia trachomatis using a nucleic acid amplification test (NAAT), the most accurate type of chlamydia test. It is run on a urine sample or a swab and is used for routine screening and when there are symptoms.
What the price covers
The price usually covers the chlamydia test only. The visit, the sample collection and a gonorrhea test on the same sample (87591) are usually billed separately.