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Western Blot Protein Test

Washington rates for HCPCS 84181

A laboratory test that uses a technique called a Western blot to detect a specific protein in a sample of blood or other body fluid. It is often used to confirm the results of an earlier screening test, such as one used to check for a particular infection.

Rates data updated July 2026.

How much does Western Blot Protein Test cost?

$20.42

Typical negotiated rate. In Washington, July 2026.

Insurers have agreed to pay about $20.42 for this service. The price depends on where it is billed: about $15.85 from a physician practice, and about $31.62 from a hospital or other facility. The two figures are alternatives, not parts of one bill.

These are rates insurers have negotiated with providers, not the amount a patient is billed. What you owe depends on your plan's deductible and coinsurance. Based on rates published by 9 insurance carriers under federal price transparency rules.

Where it's billed changes the price

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$15.85$15.49 to $23.44
FacilityA hospital or hospital-owned outpatient department$31.62$18.62 to $46.77

How much rates vary

Facilitymedian $32 · 10th to 90th $17 to $91Professionalmedian $16 · 10th to 90th $11 to $36
$5.0$10.0$20.0$50.0$100.0$200.0facility $32professional $16

Distribution of negotiated rates across all payers (price axis is log-scale). Each curve is scaled to its own total: facility and professional rates are different services, shown together to compare where they cluster. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
Global
Typical Low
$15.85
Median
$38.90
Typical High
$93.33
Aetna
Setting
Professional
Modifier
Global
Typical Low
$15.85
Median
$15.85
Typical High
$112.20
Asuris Northwest Health
Setting
Facility
Modifier
Global
Typical Low
$16.98
Median
$21.38
Typical High
$46.77
Asuris Northwest Health
Setting
Professional
Modifier
Global
Typical Low
$12.88
Median
$15.14
Typical High
$17.38
Cigna
Setting
Facility
Modifier
Global
Typical Low
$17.78
Median
$36.31
Typical High
$54.95
Cigna
Setting
Professional
Modifier
Global
Typical Low
$19.05
Median
$26.92
Typical High
$52.48
Molina
Setting
Professional
Modifier
Global
Typical Low
$10.96
Median
$18.20
Typical High
$33.11
Pacific Source
Setting
Facility
Modifier
Global
Typical Low
$16.98
Median
$18.62
Typical High
$33.88
Pacific Source
Setting
Professional
Modifier
Global
Typical Low
$16.98
Median
$16.98
Typical High
$24.55
Premera BCBS
Setting
Facility
Modifier
Global
Typical Low
$16.98
Median
$29.51
Typical High
$46.77
Premera BCBS
Setting
Professional
Modifier
Global
Typical Low
$15.49
Median
$15.49
Typical High
$20.42
Regence BlueShield
Setting
Facility
Modifier
Global
Typical Low
$16.98
Median
$25.70
Typical High
$45.71
Regence BlueShield
Setting
Professional
Modifier
Global
Typical Low
$12.88
Median
$15.14
Typical High
$16.98
United
Setting
Facility
Modifier
Global
Typical Low
$15.49
Median
$20.42
Typical High
$20.42
United
Setting
Professional
Modifier
Global
Typical Low
$7.08
Median
$7.59
Typical High
$20.42
Wellpoint
Setting
Professional
Modifier
Global
Typical Low
$7.59
Median
$8.91
Typical High
$30.90

Where Washington sits

The same service costs 2.6 times more in South Dakota than in Maryland. Every bar is a state, most expensive first. Pick one to see its carriers and full range.

Washington $20.42 · 20th of 51
SD $33.88MD $12.88

Median negotiated rate in each state, from every insurer that publishes one. States where no insurer publishes a rate for this service are not shown.