TPO antibody test cost in Oxnard, CA
In Oxnard-Thousand Oaks-Ventura, CA, 3 hospitals list a cash price for thyroid peroxidase (TPO) antibody test: from $13.00 to $76.65, with a median of $72.63. The lowest listed price is at Los Robles Hospital and Medical Center — $59.63 less than the median here. Across California, the median is $22.88 at 135 hospitals.
Cash prices at 3 facilities across 3 cities for code 86376, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 27, 2026; the hospital files themselves were last updated between Feb 28, 2026 and Sep 1, 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 Oxnard-Thousand Oaks-Ventura, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Los Robles Hospital and Medical Center lowest Thousand Oaks, CA · (805) 497-2727 LIVER-KIDNEY MICRO AB | $13.00 | $13.00 | $1.95–$13.00 | — | Sep 1, 2026 source file |
| Dignity Health Camarillo, CA MICROSOML AB THYROID | $72.63 | $175.00 | $14.55–$175.00 | 58% | Feb 28, 2026 source file |
| Dignity Health Oxnard, CA · (805) 988-2500 MICROSOML AB THYROID | $76.65 | $175.00 | $14.55–$175.00 | 56% | Feb 28, 2026 source file |
| Los Robles Hospital and Medical Center Thousand Oaks, CA · (805) 497-2727 LIVER CYTOSOL AB | $199.75 | $199.75 | $29.96–$199.75 | — | Sep 1, 2026 source file |
Outpatient: lowest $13.00, median $72.63, highest $76.65 — a 5.9× difference within the same market.
As an inpatient, the same code is billed by 2 facilities here, median $74.64. 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 2 of 3 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
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.
12 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 86376 ($67.50). 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.
| Dignity Health Camarillo, CA2091E RL-A-THYRO 50645A | $2.70 | file |
| Los Robles Hospital and Medical Center Thousand Oaks, CATHYROID PEROXIDASE AB | $2.75 | file |
| Dignity Health Oxnard, CA2091E RL-A-THYRO 50645A | $2.85 | file |
| Dignity Health Camarillo, CARL-A-RFLX AMICR 50075 | $3.32 | file |
| Dignity Health Oxnard, CARL-A-RFLX AMICR 50075 | $3.51 | file |
| Dignity Health Camarillo, CA2019M RL-A-LIVER PAN 3002479B | $4.37 | file |
| Dignity Health Oxnard, CA2019M RL-A-LIVER PAN 3002479B | $4.62 | file |
| Dignity Health Camarillo, CAMICROSOMAL ANTIBODY LVR KDNY | $5.47 | file |
| Dignity Health Oxnard, CAMICROSOMAL ANTIBODY LVR KDNY | $5.77 | file |
| Dignity Health Camarillo, CARL-A-LIVER-KID 99270 | $5.81 | file |
| Los Robles Hospital and Medical Center Thousand Oaks, CAANTI MICROSOMAL AB | $6.00 | file |
| Dignity Health Oxnard, CARL-A-LIVER-KID 99270 | $6.14 | file |