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Clotting-regulation Protein Blood Test, Protein S

Tennessee rates for HCPCS 85306

This is a blood test that measures protein S, one of the body's natural proteins that helps keep blood clotting properly balanced. It's typically ordered as part of a work-up after an unexplained or recurrent blood clot, to check whether a deficiency in this protein might be a contributing factor. It's usually run together with a small set of related clot-regulation tests.

Rates data updated July 2026.

How much does Clotting-regulation Protein Blood Test, Protein S cost?

$14.13

Typical negotiated rate. In Tennessee, July 2026.

Insurers have agreed to pay about $14.13 for this service. The price depends on where it is billed: about $12.02 from a physician practice, and about $89.13 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 6 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$12.02$11.48 to $13.80
FacilityA hospital or hospital-owned outpatient department$89.13$23.44 to $166

How much rates vary

Facilitymedian $89 · 10th to 90th $12 to $263Professionalmedian $12 · 10th to 90th $11 to $19
$10$20$50$100$200$500facility $89professional $12

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
$12.30
Median
$102.33
Typical High
$263.03
Aetna
Setting
Professional
Modifier
Global
Typical Low
$11.48
Median
$12.02
Typical High
$16.22
Ambetter
Setting
Professional
Modifier
Global
Typical Low
$6.92
Median
$7.59
Typical High
$38.02
BCBS
Setting
Professional
Modifier
Global
Typical Low
$15.49
Median
$19.50
Typical High
$19.50
Cigna
Setting
Facility
Modifier
Global
Typical Low
$11.48
Median
$32.36
Typical High
$64.57
Cigna
Setting
Professional
Modifier
Global
Typical Low
$7.08
Median
$11.75
Typical High
$23.44
Lucent Health
Setting
Facility
Modifier
Global
Typical Low
$208.93
Median
$208.93
Typical High
$208.93
United
Setting
Facility
Modifier
Global
Typical Low
$6.46
Median
$15.49
Typical High
$15.49
United
Setting
Professional
Modifier
Global
Typical Low
$6.46
Median
$11.75
Typical High
$21.38

Where Tennessee sits

The same service costs 3.6 times more in West Virginia than in Kentucky. 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.

Tennessee· 45th of 51

$14.13

WV $50.12KY $13.80

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.