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Fibrin-Stabilizing Factor (XIII) Solubility Screen

Washington rates for HCPCS 85291

Screens for a shortage of the clotting protein that stabilizes fibrin, the mesh holding a blood clot together, known as factor XIII. A clot formed from the blood sample is placed in a solution and watched: a clot that dissolves points to a deficiency, while a clot that holds together does not. The answer is yes-or-no rather than a measured level or activity figure.

Rates data updated October 2026.

How much does Fibrin-Stabilizing Factor (XIII) Solubility Screen cost?

$8.51

Typical negotiated rate. In Washington, October 2026.

Insurers have agreed to pay about $8.51 for this service. The price depends on where it is billed: about $8.13 from a physician practice, and about $13.80 from a hospital or other facility.

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.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$8.13$5.89 to $9.12
FacilityA hospital or hospital-owned outpatient department$13.80$10.00 to $18.20

How much rates vary

Facilitymedian $14 · 10th to 90th $9 to $25Professionalmedian $8 · 10th to 90th $4 to $11
$5$10$20facility $14professional $8

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

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
None
Typical Low
$8.51
Median
$8.51
Typical High
$14.13
Aetna
Setting
Professional
Modifier
None
Typical Low
$8.51
Median
$8.51
Typical High
$10.72
Asuris Northwest Health
Setting
Facility
Modifier
None
Typical Low
$6.76
Median
$10.47
Typical High
$25.12
Asuris Northwest Health
Setting
Professional
Modifier
None
Typical Low
$6.76
Median
$8.13
Typical High
$9.12
Cigna
Setting
Facility
Modifier
None
Typical Low
$9.55
Median
$16.22
Typical High
$28.84
Cigna
Setting
Professional
Modifier
None
Typical Low
$5.62
Median
$9.77
Typical High
$12.88
Molina
Setting
Professional
Modifier
None
Typical Low
$5.89
Median
$7.94
Typical High
$7.94
Pacific Source
Setting
Facility
Modifier
None
Typical Low
$9.12
Median
$10.23
Typical High
$18.20
Premera BCBS
Setting
Facility
Modifier
None
Typical Low
$9.12
Median
$15.85
Typical High
$25.12
Premera BCBS
Setting
Professional
Modifier
None
Typical Low
$8.13
Median
$8.13
Typical High
$10.96
Regence BlueShield
Setting
Facility
Modifier
None
Typical Low
$9.12
Median
$14.79
Typical High
$25.12
Regence BlueShield
Setting
Professional
Modifier
None
Typical Low
$6.76
Median
$8.13
Typical High
$9.12
United
Setting
Facility
Modifier
None
Typical Low
$9.12
Median
$10.96
Typical High
$10.96
United
Setting
Professional
Modifier
None
Typical Low
$3.80
Median
$4.07
Typical High
$10.23
Wellpoint
Setting
Professional
Modifier
None
Typical Low
$4.07
Median
$9.12
Typical High
$16.22
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
$4.27
Median
$4.27
Typical High
$5.37
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$1.70
Median
$1.70
Typical High
$2.14

Where Washington sits

The same service costs 5.9 times more in Kansas than in Alabama. 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.

Washington· 31st of 51

$8.51

KS $32.36AL $5.50

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.