Lab tests CPT 86431 Inpatient — admitted to hospital

Rheumatoid factor test cost in Centralia, WA — inpatient

In Centralia, WA, 1 hospital lists a cash price for rheumatoid factor (RF) test as an inpatient: from $24.96 to $24.96, with a median of $24.96. Across Washington, the median is $31.95 at 32 hospitals.

Cash prices at 1 facility for code 86431, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 1, 2026.

Lowest$24.96Providence Centralia Hospital
Median$24.96half pay less
Highest$24.96in this market
Difference1.0×highest vs lowest

Where each hospital's price falls

Each dot is one hospital's cash price on a scale from the lowest to the highest in Centralia, WA.

median
Lowest $24.96Highest $24.96

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Providence Centralia Hospital lowest Centralia, WA · (360) 330-8530 HC RHEUMATOID FACTOR QUANTITATIVE LAB $24.96 $48.00 — 48% Apr 1, 2026
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Providence Centralia Hospital lowest Centralia, WA · (360) 330-8530 HC RHEUMATOID FACTOR QUANT $24.96 $48.00 — 48% Apr 1, 2026
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Inpatient: lowest $24.96, median $24.96, highest $24.96.

As an outpatient, the same code is billed by 1 facility here, median $24.96 — that is the price to compare if you are not being admitted.

What it is

Rheumatoid factor is an antibody found in many people with rheumatoid arthritis. The test is part of the workup for joint pain and swelling.

What the price covers

The price usually covers running the test. The blood draw (36415) is often billed as a separate line.