TPO antibody test cost in Riverside, CA
In Riverside-San Bernardino-Ontario, CA, 15 hospitals list a cash price for thyroid peroxidase (TPO) antibody test: from $10.00 to $185.00, with a median of $14.00. The lowest listed price is at Loma Linda University Medical Center and 3 other hospitals — $4.00 less than the median here. Across California, the median is $22.88 at 91 hospitals.
Cash prices at 15 facilities across 13 cities for code 86376, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Sep 17, 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 Riverside-San Bernardino-Ontario, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Loma Linda University Medical Center lowest Loma Linda, CA · (909) 558-4000 HC SOM THYROPEROXIDASE AB | $10.00 | $10.00 | $2.00–$148.10 | — | Sep 2, 2026 source file |
| Loma Linda University Childrens Hospital lowest Loma Linda, CA · (909) 558-8000 HC SOM THYROPEROXIDASE AB | $10.00 | $10.00 | $2.00–$151.14 | — | Sep 2, 2026 source file |
| Loma Linda University Medical Center - Murrieta lowest Murrieta, CA · (951) 290-4000 HC SOM THYROPEROXIDASE AB | $10.00 | $10.00 | $1.81–$139.03 | — | Sep 2, 2026 source file |
| Loma Linda University Behavioral Medicine Center lowest Redlands, CA HC SOM THYROPEROXIDASE AB | $10.00 | $10.00 | $5.50–$14.55 | — | Aug 31, 2026 source file |
| Palo Verde Hospital Blythe, CA · (760) 922-4115 Liver-Kidney Microsomal Ab LC | $10.91 | $14.55 | — | 25% | Jul 1, 2026 source file |
| Palo Verde Hospital Blythe, CA · (760) 922-4115 Thyroid Peroxidase (TPO) Ab LC | $10.91 | $14.55 | — | 25% | Jul 1, 2026 source file |
| Loma Linda University Medical Center - Murrieta Murrieta, CA · (951) 290-4000 HC SOM ANTI-LIVERKIDNEY MICROSOMAL AB | $13.50 | $13.50 | $2.44–$139.03 | — | Sep 2, 2026 source file |
| Loma Linda University Medical Center Loma Linda, CA · (909) 558-4000 HC SOM ANTI-LIVERKIDNEY MICROSOMAL AB | $13.50 | $13.50 | $2.70–$148.10 | — | Sep 2, 2026 source file |
| Loma Linda University Behavioral Medicine Center Redlands, CA HC SOM ANTI-LIVERKIDNEY MICROSOMAL AB | $13.50 | $13.50 | $7.42–$14.55 | — | Aug 31, 2026 source file |
| Loma Linda University Childrens Hospital Loma Linda, CA · (909) 558-8000 HC SOM ANTI-LIVERKIDNEY MICROSOMAL AB | $13.50 | $13.50 | $2.70–$151.14 | — | Sep 2, 2026 source file |
| Chino Valley Medical Center Chino, CA · (909) 627-6111 Hc Microsomal Antibody | $14.00 | $211.25 | $13.82–$211.25 | 93% | Sep 1, 2026 source file |
| Desert Valley Hospital Victorville, CA · (760) 241-8000 MICROSOMAL AB LC 4 | $14.00 | $48.02 | $14.40–$169.00 | 71% | Sep 1, 2026 source file |
| Desert Valley Hospital Victorville, CA · (760) 241-8000 MICROSOMAL AB LC 9 | $14.00 | $142.31 | $14.40–$169.00 | 90% | Sep 1, 2026 source file |
| Desert Valley Hospital Victorville, CA · (760) 241-8000 PN THYROID AB,MICRO THY AB LC1 | $14.00 | $80.03 | $14.40–$169.00 | 83% | Sep 1, 2026 source file |
| Montclair Hospital Medical Center Montclair, CA · (909) 625-8300 Hc Microsomal Antibody | $14.00 | $211.25 | $13.82–$211.25 | 93% | Sep 1, 2026 source file |
| Desert Valley Hospital Victorville, CA · (760) 241-8000 PN THYROGL QT,MICRO THY AB LC1 | $14.00 | $169.00 | $14.40–$169.00 | 92% | Sep 1, 2026 source file |
| Desert Valley Hospital Victorville, CA · (760) 241-8000 TPO AB LC | $14.00 | $80.03 | $14.40–$169.00 | 83% | Sep 1, 2026 source file |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 Qu Microsomal Antibody Liver-Kidney | $15.20 | $15.20 | $10.38–$17.96 | — | — source file |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 Qu Microsomal Antibody Liver-Kidney | $15.20 | $15.20 | $10.38–$17.96 | — | — source file |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Lab Ref Thyroid Microsomal Ab(Anti-Tp) | $16.07 | $16.07 | $10.38–$17.96 | — | — source file |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Lab Ref Thyroid Microsomal Ab(Anti-Tp) | $16.07 | $16.07 | $10.38–$17.96 | — | — source file |
| Hospital of Barstow Barstow, CA · (760) 256-1761 Microsomal antibodies (autoantibody) measurement | $18.06 | $30.10 | $4.38–$24.08 | 40% | Sep 17, 2026 source file |
| Kaiser Foundation Hospital - Riverside Riverside, CA · (951) 353-2000 MICROSOMAL ANTIBODIES EACH | $22.88 | $44.00 | $10.00–$30.00 | 48% | — source file |
| Kaiser Foundation Hospital - Fontana Fontana, CA · (909) 427-5000 MICROSOMAL ANTIBODIES EACH | $22.88 | $44.00 | $10.00–$30.00 | 48% | — source file |
| Kaiser Foundation Hospital - Moreno Valley Moreno Valley, CA · (951) 251-6530 MICROSOMAL ANTIBODIES EACH | $22.88 | $44.00 | $10.00–$30.00 | 48% | — source file |
| St Mary Medical Center Apple Valley, CA · (760) 242-2311 HC MICROSOMAL ANTIBODIES EACH LAB | $28.78 | $59.95 | — | 52% | Apr 1, 2026 source file |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Qu Microsomal Antibody Thyroid Ri | $34.43 | $34.43 | $10.38–$34.43 | — | — source file |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Qu Microsomal Antibody Thyroid Ri | $34.43 | $34.43 | $10.38–$34.43 | — | — source file |
| San Antonio Regional Hospital Upland, CA · (909) 985-2811 Microsomal antibodies (autoantibody) measurement | $185.00 | $16.96 | $2.47–$201.00 | -991% | Apr 2, 2026 source file |
Outpatient: lowest $10.00, median $14.00, highest $185.00 — a 18.5× difference within the same market.
As an inpatient, the same code is billed by 10 facilities here, median $13.06. 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 13 of 13 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
The TPO antibody test looks for antibodies against a thyroid enzyme. They are found in most people with Hashimoto's thyroiditis and many with Graves' disease.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.
2 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 86376 ($65.00). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.
| St Mary Medical Center Apple Valley, CAHC MICROSOMAL ANTIBODY | $2.34 | file |
| St Mary Medical Center Apple Valley, CAHC MICROSOMAL ANTIBODIES EACH CDM | $2.40 | file |