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Clotting-regulation Protein Blood Test, Protein S

Maine 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?

$17.38

Typical negotiated rate. In Maine, July 2026.

Insurers have agreed to pay about $17.38 for this service. The price depends on where it is billed: about $15.49 from a physician practice, and about $38.02 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$15.49$11.75 to $15.49
FacilityA hospital or hospital-owned outpatient department$38.02$15.49 to $69.18

How much rates vary

Facilitymedian $38 · 10th to 90th $15 to $135Professionalmedian $15 · 10th to 90th $9 to $19
$10$20$50$100facility $38professional $15

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
$15.49
Median
$36.31
Typical High
$70.79
Aetna
Setting
Professional
Modifier
Global
Typical Low
$11.75
Median
$12.30
Typical High
$17.78
Anthem BCBS
Setting
Facility
Modifier
Global
Typical Low
$17.78
Median
$134.90
Typical High
$144.54
Anthem BCBS
Setting
Professional
Modifier
Global
Typical Low
$6.17
Median
$8.71
Typical High
$18.62
Cigna
Setting
Facility
Modifier
Global
Typical Low
$18.20
Median
$21.38
Typical High
$34.67
Cigna
Setting
Professional
Modifier
Global
Typical Low
$12.59
Median
$15.49
Typical High
$21.88
Harvard Pilgrim
Setting
Professional
Modifier
Global
Typical Low
$11.75
Median
$15.49
Typical High
$18.62
Martin's Point
Setting
Facility
Modifier
Global
Typical Low
$15.49
Median
$50.12
Typical High
$144.54
Martin's Point
Setting
Professional
Modifier
Global
Typical Low
$12.30
Median
$15.49
Typical High
$21.38
United
Setting
Facility
Modifier
Global
Typical Low
$52.48
Median
$52.48
Typical High
$52.48
United
Setting
Professional
Modifier
Global
Typical Low
$9.12
Median
$15.49
Typical High
$29.51

Where Maine 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.

Maine· 31st of 51

$17.38

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.