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Protein S Level Test

Illinois 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?

$12.02

Typical negotiated rate. In Illinois, July 2026.

Insurers have agreed to pay about $12.02 for this service. The price depends on where it is billed: about $9.55 from a physician practice, and about $21.38 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 7 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$9.55$7.94 to $11.48
FacilityA hospital or hospital-owned outpatient department$21.38$14.45 to $28.84

How much rates vary

Facilitymedian $21 · 10th to 90th $11 to $65Professionalmedian $10 · 10th to 90th $3 to $24
$5$10$20$50$100$200facility $21professional $10

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
$10.00
Median
$19.95
Typical High
$64.57
Aetna
Setting
Professional
Modifier
Global
Typical Low
$9.12
Median
$10.23
Typical High
$23.99
Ambetter
Setting
Professional
Modifier
Global
Typical Low
$7.08
Median
$7.08
Typical High
$7.08
BCBS
Setting
Facility
Modifier
Global
Typical Low
$15.85
Median
$32.36
Typical High
$120.23
BCBS
Setting
Professional
Modifier
Global
Typical Low
$3.47
Median
$7.94
Typical High
$8.91
Cigna
Setting
Facility
Modifier
Global
Typical Low
$12.88
Median
$26.92
Typical High
$53.70
Cigna
Setting
Professional
Modifier
Global
Typical Low
$6.17
Median
$13.49
Typical High
$21.38
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$12.88
Median
$22.91
Typical High
$229.09
Hally Health
Setting
Facility
Modifier
Global
Typical Low
$100.00
Median
$100.00
Typical High
$100.00
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$15.14
Median
$15.14
Typical High
$15.14
Molina
Setting
Professional
Modifier
Global
Typical Low
$6.46
Median
$6.46
Typical High
$8.13
United
Setting
Facility
Modifier
Global
Typical Low
$8.51
Median
$11.48
Typical High
$23.44
United
Setting
Professional
Modifier
Global
Typical Low
$4.90
Median
$8.71
Typical High
$14.79

Where Illinois 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.

Illinois· 28th of 51

$12.02

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.