Lab tests CPT 86431 Outpatient

Rheumatoid factor test cost in Williamsport, PA

In Williamsport, PA, 2 hospitals list a cash price for rheumatoid factor (RF) test: from $98.40 to $141.60, with a median of $120.00. The lowest listed price is at UPMC Williamsport — $21.60 less than the median here. Across Pennsylvania, the median is $39.20 at 64 hospitals.

Cash prices at 2 facilities across 2 cities for code 86431, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between — and —.

Lowest$98.40UPMC Williamsport
Median$120.00half pay less
Highest$141.60in this market
Difference1.4×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 Williamsport, PA.

median
Lowest $98.40Highest $141.60

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
UPMC Williamsport lowest Williamsport, PA · (570) 321-1000 RHEUMATOID FACTOR TITER QUANT $98.40 $164.00 $5.61–$131.20 40% —
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UPMC Williamsport lowest Williamsport, PA · (570) 321-1000 RHEUMO FACT QUANT P3355 $98.40 $164.00 $5.61–$131.20 40% —
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UPMC Williamsport lowest Williamsport, PA · (570) 321-1000 QUANTITATIVE P4262 $98.40 $164.00 $5.61–$131.20 40% —
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UPMC Williamsport lowest Williamsport, PA · (570) 321-1000 QUANTITATIVE P6842 $98.40 $164.00 $5.61–$131.20 40% —
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UPMC Williamsport lowest Williamsport, PA · (570) 321-1000 RHEUMATOID FACTOR BODY FLUID $98.40 $164.00 $5.61–$131.20 40% —
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UPMC Williamsport lowest Williamsport, PA · (570) 321-1000 QUANTITATIVE P4312 $98.40 $164.00 $5.61–$131.20 40% —
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UPMC Williamsport lowest Williamsport, PA · (570) 321-1000 QUANTITATIVE P4307 $98.40 $164.00 $5.61–$131.20 40% —
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UPMC Williamsport lowest Williamsport, PA · (570) 321-1000 QUANTITATIVE P8130 $98.40 $164.00 $5.61–$131.20 40% —
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UPMC Williamsport lowest Williamsport, PA · (570) 321-1000 QUANTITATIVE P5919 $98.40 $164.00 $5.61–$131.20 40% —
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UPMC Williamsport lowest Williamsport, PA · (570) 321-1000 RHEUMATOID FACTR(RA/RF FACTR) $98.40 $164.00 $5.61–$131.20 40% —
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UPMC Williamsport lowest Williamsport, PA · (570) 321-1000 QUANTITATIVE P3164 $98.40 $164.00 $5.61–$131.20 40% —
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UPMC Williamsport lowest Williamsport, PA · (570) 321-1000 RHEUMATOID FACTOR QN P5076 $98.40 $164.00 $5.61–$131.20 40% —
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UPMC Williamsport lowest Williamsport, PA · (570) 321-1000 QUANTITATIVE P5091 $98.40 $164.00 $5.61–$131.20 40% —
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UPMC Williamsport lowest Williamsport, PA · (570) 321-1000 RF (RHEUMATOID FACTOR) IGM $98.40 $164.00 $5.61–$131.20 40% —
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UPMC Williamsport lowest Williamsport, PA · (570) 321-1000 RF (RHEUMATOID FACTOR) IGA $98.40 $164.00 $5.61–$131.20 40% —
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UPMC Muncy Muncy, PA · (570) 546-8282 QUANTITATIVE P4262 $141.60 $236.00 $5.61–$224.20 40% —
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UPMC Muncy Muncy, PA · (570) 546-8282 QUANTITATIVE P4307 $141.60 $236.00 $5.61–$224.20 40% —
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UPMC Muncy Muncy, PA · (570) 546-8282 QUANTITATIVE P4312 $141.60 $236.00 $5.61–$224.20 40% —
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UPMC Muncy Muncy, PA · (570) 546-8282 QUANTITATIVE P5091 $141.60 $236.00 $5.61–$224.20 40% —
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UPMC Muncy Muncy, PA · (570) 546-8282 QUANTITATIVE P5919 $141.60 $236.00 $5.61–$224.20 40% —
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UPMC Muncy Muncy, PA · (570) 546-8282 QUANTITATIVE P6842 $141.60 $236.00 $5.61–$224.20 40% —
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UPMC Muncy Muncy, PA · (570) 546-8282 QUANTITATIVE P8130 $141.60 $236.00 $5.61–$224.20 40% —
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UPMC Muncy Muncy, PA · (570) 546-8282 RF (RHEUMATOID FACTOR) IGA $141.60 $236.00 $5.61–$224.20 40% —
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UPMC Muncy Muncy, PA · (570) 546-8282 RF (RHEUMATOID FACTOR) IGM $141.60 $236.00 $5.61–$224.20 40% —
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UPMC Muncy Muncy, PA · (570) 546-8282 RHEUMATOID FACTOR BODY FLUID $141.60 $236.00 $5.61–$224.20 40% —
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UPMC Muncy Muncy, PA · (570) 546-8282 RHEUMATOID FACTOR QN P5076 $141.60 $236.00 $5.61–$224.20 40% —
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UPMC Muncy Muncy, PA · (570) 546-8282 RHEUMATOID FACTOR TITER QUANT $141.60 $236.00 $5.61–$224.20 40% —
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UPMC Muncy Muncy, PA · (570) 546-8282 RHEUMATOID FACTR(RA/RF FACTR) $141.60 $236.00 $5.61–$224.20 40% —
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UPMC Muncy Muncy, PA · (570) 546-8282 RHEUMO FACT QUANT P3355 $141.60 $236.00 $5.61–$224.20 40% —
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Outpatient: lowest $98.40, median $120.00, highest $141.60 — a 1.4× difference within the same market.

As an inpatient, the same code is billed by 2 facilities here, median $120.00. 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 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

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.