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Western Blot Protein Test

Maryland 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 October 2026.

How much does Western Blot Protein Test cost?

$13.49

Typical negotiated rate. In Maryland, October 2026.

Insurers have agreed to pay about $13.49 for this service. Most negotiated rates run $12.30 to $15.14.

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 6 insurance carriers under federal price transparency rules.

How much rates vary

Facilitymedian $12 · 10th to 90th $9 to $22Professionalmedian $13 · 10th to 90th $9 to $19
$10$20$50facility $12professional $13

Distribution of negotiated rates across all payers (price axis is log-scale). Small sample; interpret with caution. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
None
Typical Low
$15.85
Median
$15.85
Typical High
$21.38
Aetna
Setting
Professional
Modifier
None
Typical Low
$12.59
Median
$12.88
Typical High
$15.49
CareFirst
Setting
Professional
Modifier
None
Typical Low
$12.30
Median
$13.49
Typical High
$15.14
Cigna
Setting
Facility
Modifier
None
Typical Low
$9.12
Median
$12.02
Typical High
$21.88
Cigna
Setting
Professional
Modifier
None
Typical Low
$9.12
Median
$22.39
Typical High
$83.18
Kaiser Permanente
Setting
Professional
Modifier
None
Typical Low
$16.98
Median
$19.50
Typical High
$33.11
United
Setting
Professional
Modifier
None
Typical Low
$7.59
Median
$9.77
Typical High
$12.88
Wellpoint
Setting
Professional
Modifier
None
Typical Low
$6.61
Median
$16.60
Typical High
$16.60
2 more rates with less common billing modifiers

A modifier changes what was billed, for example a reduced or repeated service. Each of these modifiers carries under 10% of the published rates for this code. Modifier combinations, and modifiers with fewer than 30 rates for a carrier, are not listed.

Insurance Carrier
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$6.31
Median
$6.46
Typical High
$6.46
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$2.51
Median
$2.51
Typical High
$2.51

Where Maryland sits

The same service costs 3.7 times more in Kansas than in New Jersey. Every bar is a state, most expensive first. Touch or drag across it to read any state, then open that state for its carriers and full range.

Maryland· 50th of 51

$13.49

KS $48.98NJ $13.18

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.