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Thyroxine Binding Globulin Blood Test

North Carolina 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?

$14.13

Typical negotiated rate. In North Carolina, July 2026.

Insurers have agreed to pay about $14.13 for this service. The price depends on where it is billed: about $11.75 from a physician practice, and about $22.91 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$11.75$11.75 to $18.20
FacilityA hospital or hospital-owned outpatient department$22.91$12.88 to $46.77

How much rates vary

Facilitymedian $23 · 10th to 90th $12 to $71Professionalmedian $12 · 10th to 90th $10 to $21
$10$20$50$100$200facility $23professional $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
$11.75
Median
$30.90
Typical High
$48.98
Aetna
Setting
Professional
Modifier
Global
Typical Low
$11.75
Median
$11.75
Typical High
$20.89
Ambetter
Setting
Professional
Modifier
Global
Typical Low
$8.91
Median
$10.23
Typical High
$10.23
BCBS
Setting
Facility
Modifier
Global
Typical Low
$25.12
Median
$45.71
Typical High
$64.57
BCBS
Setting
Professional
Modifier
Global
Typical Low
$6.61
Median
$13.49
Typical High
$14.79
Cigna
Setting
Facility
Modifier
Global
Typical Low
$10.23
Median
$28.84
Typical High
$67.61
Cigna
Setting
Professional
Modifier
Global
Typical Low
$7.76
Median
$10.23
Typical High
$22.91
Medcost
Setting
Professional
Modifier
Global
Typical Low
$10.96
Median
$27.54
Typical High
$47.86
Medcost
Setting
Facility
Modifier
Global
Typical Low
$11.75
Median
$13.49
Typical High
$28.84
Medcost
Setting
Professional
Modifier
Global
Typical Low
$11.75
Median
$20.89
Typical High
$23.44
United
Setting
Facility
Modifier
Global
Typical Low
$7.76
Median
$19.50
Typical High
$25.70
United
Setting
Professional
Modifier
Global
Typical Low
$7.41
Median
$10.23
Typical High
$20.89
Wellcare
Setting
Facility
Modifier
Global
Typical Low
$70.79
Median
$70.79
Typical High
$100.00

Where North Carolina 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.

North Carolina· 37th of 51

$14.13

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.