go back

Protein S Level Test

Washington, DC rates for HCPCS 85305

This blood test measures the total amount of a natural protein the body uses to help regulate blood clotting. It is used to help investigate an unexplained blood clot or a family history of clotting problems.

Rates data updated July 2026.

How much does Protein S Level Test cost?

$20.89

Typical negotiated rate. In Washington, DC, July 2026.

Insurers have agreed to pay about $20.89 for this service. The price depends on where it is billed: about $8.71 from a physician practice, and about $67.61 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 5 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$8.71$8.71 to $8.71
FacilityA hospital or hospital-owned outpatient department$67.61$20.89 to $93.33

How much rates vary

Facilitymedian $68 · 10th to 90th $9 to $117Professionalmedian $9 · 10th to 90th $9 to $41
$5$10$20$50$100facility $68professional $9

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
$8.71
Median
$70.79
Typical High
$117.49
Aetna
Setting
Professional
Modifier
Global
Typical Low
$8.71
Median
$8.71
Typical High
$8.71
CareFirst
Setting
Professional
Modifier
Global
Typical Low
$33.11
Median
$58.88
Typical High
$128.82
Cigna
Setting
Facility
Modifier
Global
Typical Low
$19.05
Median
$19.50
Typical High
$43.65
Cigna
Setting
Professional
Modifier
Global
Typical Low
$6.31
Median
$13.18
Typical High
$91.20
Kaiser Permanente
Setting
Professional
Modifier
Global
Typical Low
$22.39
Median
$22.39
Typical High
$23.44
United
Setting
Facility
Modifier
Global
Typical Low
$6.76
Median
$13.80
Typical High
$14.13
United
Setting
Professional
Modifier
Global
Typical Low
$4.90
Median
$7.41
Typical High
$19.95

Where Washington, DC sits

The same service costs 3.0 times more in Pennsylvania than in Tennessee. 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, DC· 5th of 51

$20.89

PA $27.54TN $9.33

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.