Rapid flu test cost in San Antonio, TX — inpatient
In San Antonio-New Braunfels, TX, 2 hospitals list a cash price for rapid flu test (influenza antigen) as an inpatient: from $38.10 to $42.00, with a median of $40.05. The lowest listed price is at Medina Regional Hospital — $1.95 less than the median here. Across Texas, the median is $113.71 at 171 hospitals.
Cash prices at 2 facilities across 2 cities for code 87804, as an inpatient (admitted to hospital) . Collected Sep 27, 2026; the hospital files themselves were last updated between Jul 29, 2026 and Jul 29, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in San Antonio-New Braunfels, TX.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Medina Regional Hospital lowest Hondo, TX · (830) 426-7700 FLU IA W DO | $38.10 | $42.33 | $21.17–$38.10 | 10% | Jul 29, 2026 source file |
| Guadalupe Regional Medical Center Seguin, TX · (830) 379-2411 INFCT AGNT W/DOO;INFLUENZA A | $42.00 | $84.00 | $16.55–$99.30 | 50% | — source file |
| Guadalupe Regional Medical Center Seguin, TX · (830) 379-2411 INFCT AGNT W/DOO;INFLUENZA B | $42.00 | $84.00 | $16.55–$99.30 | 50% | — source file |
| Guadalupe Regional Medical Center Seguin, TX · (830) 379-2411 INFCT AGNT W/DOO;INFLUENZA A | $42.00 | $84.00 | $16.55–$99.30 | 50% | — source file |
| Medina Regional Hospital Hondo, TX · (830) 426-7700 INFLUENZA A ANTIGEN | $65.39 | $72.65 | $36.33–$65.39 | 10% | Jul 29, 2026 source file |
| Medina Regional Hospital Hondo, TX · (830) 426-7700 INFLUENZA B ANTIGEN | $65.39 | $72.65 | $36.33–$65.39 | 10% | Jul 29, 2026 source file |
Inpatient: lowest $38.10, median $40.05, highest $42.00 — a 1.1× difference within the same market.
As an outpatient, the same code is billed by 13 facilities here, median $350.65 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 1 of 2 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it 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
A rapid flu test checks a nose or throat swab for influenza within minutes. The code is billed once for each flu type tested, so a test for A and B may be billed twice.
What the price covers
The price usually covers the swab and the test for one flu type; tests for A and B may be billed twice.