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Clotting-regulation Protein Blood Test, Protein S

Louisiana 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?

$18.62

Typical negotiated rate. In Louisiana, July 2026.

Insurers have agreed to pay about $18.62 for this service. The price depends on where it is billed: about $16.22 from a physician practice, and about $24.55 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$16.22$13.49 to $18.62
FacilityA hospital or hospital-owned outpatient department$24.55$18.62 to $51.29

How much rates vary

Facilitymedian $25 · 10th to 90th $16 to $87Professionalmedian $16 · 10th to 90th $9 to $21
$10$20$50$100$200facility $25professional $16

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
$16.22
Median
$24.55
Typical High
$91.20
Aetna
Setting
Professional
Modifier
Global
Typical Low
$11.75
Median
$16.22
Typical High
$20.89
BCBS
Setting
Facility
Modifier
Global
Typical Low
$18.62
Median
$30.90
Typical High
$56.23
BCBS
Setting
Professional
Modifier
Global
Typical Low
$12.88
Median
$16.98
Typical High
$30.20
Christus
Setting
Facility
Modifier
Global
Typical Low
$21.38
Median
$21.38
Typical High
$39.81
Cigna
Setting
Facility
Modifier
Global
Typical Low
$16.60
Median
$50.12
Typical High
$95.50
Cigna
Setting
Professional
Modifier
Global
Typical Low
$7.08
Median
$10.23
Typical High
$17.38
United
Setting
Facility
Modifier
Global
Typical Low
$6.46
Median
$15.49
Typical High
$19.05
United
Setting
Professional
Modifier
Global
Typical Low
$6.46
Median
$8.91
Typical High
$21.38

Where Louisiana 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.

Louisiana· 25th of 51

$18.62

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.