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Thyroxine Binding Globulin Blood Test

Rhode Island rates for HCPCS 84442

A blood test that measures the level of thyroxine binding globulin, a protein made by the liver that carries thyroid hormone through the bloodstream. It helps doctors interpret thyroid hormone levels correctly, since changes in this carrier protein — from pregnancy, liver disease, certain medications, or inherited conditions — can make total thyroid hormone results look abnormal even when thyroid function itself is normal. A small blood sample is all that's needed.

Rates data updated July 2026.

How much does Thyroxine Binding Globulin Blood Test cost?

$15.85

Typical negotiated rate. In Rhode Island, July 2026.

Insurers have agreed to pay about $15.85 for this service. The price depends on where it is billed: about $15.49 from a physician practice, and about $44.67 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 4 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$10.96 to $15.49
FacilityA hospital or hospital-owned outpatient department$44.67$19.05 to $85.11

How much rates vary

Facilitymedian $45 · 10th to 90th $17 to $93Professionalmedian $15 · 10th to 90th $9 to $25
$10$20$50$100facility $45professional $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
$23.99
Median
$60.26
Typical High
$93.33
Aetna
Setting
Professional
Modifier
Global
Typical Low
$13.18
Median
$15.49
Typical High
$15.49
BCBS
Setting
Facility
Modifier
Global
Typical Low
$16.98
Median
$18.20
Typical High
$30.20
BCBS
Setting
Professional
Modifier
Global
Typical Low
$8.32
Median
$10.96
Typical High
$22.39
Cigna
Setting
Facility
Modifier
Global
Typical Low
$13.80
Median
$35.48
Typical High
$61.66
Cigna
Setting
Professional
Modifier
Global
Typical Low
$10.72
Median
$16.22
Typical High
$22.91
United
Setting
Facility
Modifier
Global
Typical Low
$17.78
Median
$17.78
Typical High
$29.51
United
Setting
Professional
Modifier
Global
Typical Low
$8.32
Median
$15.85
Typical High
$29.51

Where Rhode Island sits

The same service costs 2.6 times more in Nebraska than in Washington, DC. 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.

Rhode Island· 28th of 51

$15.85

NE $28.18DC $10.96

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.