Lyme disease test cost in St. Louis, MO
In St. Louis, MO-IL, 8 hospitals list a cash price for Lyme disease antibody test: from $31.20 to $203.76, with a median of $105.60. The lowest listed price is at Mercy Hospital South — $74.40 less than the median here. Across Missouri, the median is $95.85 at 28 hospitals.
Cash prices at 8 facilities across 6 cities for code 86618, 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 South lowest Saint Louis, MO · (314) 525-1000 Lyme Disease Antibody | $31.20 | $48.00 | $15.33–$38.32 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO Lyme Disease Antibody CSF | $61.10 | $94.00 | $6.11–$94.00 | 35% | — source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 Lyme Disease Antibody CSF | $61.10 | $94.00 | $15.33–$38.32 | 35% | — source file |
| Mercy Hospital Jefferson Festus, MO Lyme Disease Antibody CSF | $61.10 | $94.00 | $15.33–$38.32 | 35% | — source file |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 LYME DISEASE AB | $100.70 | $167.84 | $167.84 | 40% | — source file |
| Mercy Hospital Jefferson Festus, MO Lyme Disease Antibody | $100.75 | $155.00 | $15.33–$38.32 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Lyme Disease Antibody | $110.50 | $170.00 | $11.05–$153.00 | 35% | — source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 Lyme Disease Antibody Igg | $115.70 | $178.00 | $11.57–$178.00 | 35% | — source file |
| Shriners Childrens - St Louis Saint Louis, MO · (314) 432-3600 LYME DISEASE ANTIBODY | $118.40 | $118.40 | $9.29–$29.26 | — | — source file |
| Mercy Hospital St Louis Saint Louis, MO Lyme Disease Antibody Igg | $118.95 | $183.00 | $11.90–$183.00 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Lyme Disease Antibody CSF | $137.15 | $211.00 | $15.33–$28.80 | 35% | — source file |
| Mercy Hospital Jefferson Festus, MO Lyme Disease Antibody Igg | $143.00 | $220.00 | $14.30–$220.00 | 35% | — source file |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 Lyme Disease Antibody CSF | $150.80 | $232.00 | $15.06–$38.32 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Lyme Disease Antibody Igg | $154.70 | $238.00 | $15.33–$28.80 | 35% | — source file |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 Lyme Disease Antibody Igg | $156.65 | $241.00 | $15.06–$38.32 | 35% | — source file |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 Lyme Disease Antibody | $157.30 | $242.00 | $15.73–$242.00 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO Lyme Disease Antibody | $157.30 | $242.00 | $15.33–$38.32 | 35% | — source file |
| Hshs Holy Family Hospital Greenville, IL · (618) 664-1230 HC LYME AB-90 | $203.76 | $283.00 | $8.50–$283.00 | 28% | — source file |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 Q6646 LYM AB IGG/IGM | $343.88 | $573.13 | $573.13 | 40% | — source file |
Outpatient: lowest $31.20, median $105.60, highest $203.76 — a 6.5× difference within the same market.
As an inpatient, the same code is billed by 4 facilities here, median $152.23. 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 5 of 8 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 blood test looks for antibodies to the bacteria that cause Lyme disease. A positive first test is confirmed with a second test.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.