TPO antibody test cost in Seattle, WA — inpatient
In Seattle-Tacoma-Bellevue, WA, 14 hospitals list a cash price for thyroid peroxidase (TPO) antibody test as an inpatient: from $7.05 to $131.20, with a median of $67.98. The lowest listed price is at Overlake Medical Center & Clinics — $60.93 less than the median here. Across Washington, the median is $77.36 at 32 hospitals.
Cash prices at 14 facilities across 12 cities for code 86376, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Feb 28, 2026 and Apr 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 Seattle-Tacoma-Bellevue, WA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Overlake Medical Center & Clinics lowest Bellevue, WA · (425) 688-5000 Hc Microsomal Antibody Lab3309 | $7.05 | $14.10 | — | 50% | Apr 1, 2026 source file |
| Overlake Medical Center & Clinics Bellevue, WA · (425) 688-5000 Hc Thyroid Peroxidase (Tpo) Ab | $14.10 | $28.20 | — | 50% | Apr 1, 2026 source file |
| Overlake Medical Center & Clinics Bellevue, WA · (425) 688-5000 Hc Liver-Kidney Microsomal Ab | $14.70 | $29.40 | — | 50% | Apr 1, 2026 source file |
| Virginia Mason Medical Center Seattle, WA · (206) 223-6600 MICROSOMAL ANTIBODIES EACH | $48.96 | $96.00 | $61.49–$76.80 | 49% | — source file |
| Saint Clare Hospital Lakewood, WA · (253) 588-1711 HC THYROID PEROXIDASE AUTOABS | $57.24 | $198.58 | $142.98–$148.94 | 71% | Feb 28, 2026 source file |
| St Anthony Hospital Gig Harbor, WA · (253) 530-2050 HC THYROID PEROXIDASE AUTOABS | $60.40 | $198.58 | $142.98–$148.94 | 70% | Feb 28, 2026 source file |
| Highline Medical Center Burien, WA · (206) 431-5237 HC THYROID PEROXIDASE AUTOABS | $60.64 | $198.58 | $85.39–$178.73 | 69% | Feb 28, 2026 source file |
| St Francis Community Hospital Federal Way, WA · (253) 944-8100 HC THYROID PEROXIDASE AUTOABS | $62.32 | $198.58 | $142.98–$148.94 | 69% | Feb 28, 2026 source file |
| St Joseph Medical Center Tacoma, WA · (253) 627-4101 HC THYROID PEROXIDASE AUTOABS | $65.77 | $198.58 | $142.98–$148.94 | 67% | Feb 28, 2026 source file |
| Enumclaw Regional Hospital Association Enumclaw, WA HC THYROID PEROXIDASE AUTOABS | $70.18 | $198.58 | $55.61–$178.73 | 65% | Feb 28, 2026 source file |
| Overlake Medical Center & Clinics Bellevue, WA · (425) 688-5000 Hc Microsomal Antibody Lab6263 | $73.70 | $147.40 | — | 50% | Apr 1, 2026 source file |
| Swedish Medical Center / Cherry Hill Seattle, WA · (206) 320-2000 HC MICROSOMAL ANTIBODIES EACH CDM | $76.32 | $159.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Medical Center / Cherry Hill Seattle, WA · (206) 320-2000 HC MICROSOMAL ANTIBODIES EACH LAB | $76.32 | $159.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Issaquah Issaquah, WA · (425) 313-4000 HC MICROSOMAL ANTIBODIES EACH CDM | $76.32 | $159.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Issaquah Issaquah, WA · (425) 313-4000 HC MICROSOMAL ANTIBODIES EACH LAB | $76.32 | $159.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Medical Center / Cherry Hill Seattle, WA · (206) 320-2000 HC MICROSOMAL ANTIBODIES EACH CDM | $76.32 | $159.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Medical Center / Cherry Hill Seattle, WA · (206) 320-2000 HC MICROSOMAL ANTIBODIES EACH LAB | $76.32 | $159.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Edmonds Edmonds, WA · (425) 640-4000 HC MICROSOMAL ANTIBODIES EACH LAB | $76.32 | $159.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Edmonds Edmonds, WA · (425) 640-4000 HC MICROSOMAL ANTIBODIES EACH CDM | $76.32 | $159.00 | — | 52% | Apr 1, 2026 source file |
| Kaiser Permanente Central Hospital Seattle, WA · (206) 326-3000 MICROSOMAL ANTIBODIES EACH | $78.40 | $98.00 | $11.00–$40.00 | 20% | Apr 1, 2026 source file |
| Providence Regional Medical Center Everett Everett, WA · (425) 261-2000 HC MICROSOMAL ANTIBODIES EACH LAB | $82.68 | $159.00 | — | 48% | Apr 1, 2026 source file |
| Providence Regional Medical Center Everett Everett, WA · (425) 261-2000 HC MICROSOMAL ANTIBODIES EACH CDM | $82.68 | $159.00 | — | 48% | Apr 1, 2026 source file |
| Cascade Valley Hospital Arlington, WA · (360) 435-2133 HC LIVER KIDNEY MICROSOME IgG | $131.20 | $164.00 | $13.94–$147.60 | 20% | — source file |
Inpatient: lowest $7.05, median $67.98, highest $131.20 — a 18.6× difference within the same market.
As an outpatient, the same code is billed by 14 facilities here, median $67.98 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 8 of 9 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 6 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.