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Thyroxine Binding Globulin Blood Test

Tennessee 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?

$11.75

Typical negotiated rate. In Tennessee, July 2026.

Insurers have agreed to pay about $11.75 for this service. The price depends on where it is billed: about $10.96 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 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$10.96$10.96 to $13.18
FacilityA hospital or hospital-owned outpatient department$22.91$13.80 to $54.95

How much rates vary

Facilitymedian $23 · 10th to 90th $11 to $71Professionalmedian $11 · 10th to 90th $10 to $17
$5$10$20$50$100facility $23professional $11

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
$10.96
Median
$40.74
Typical High
$63.10
Aetna
Setting
Professional
Modifier
Global
Typical Low
$10.96
Median
$10.96
Typical High
$15.85
Ambetter
Setting
Professional
Modifier
Global
Typical Low
$9.12
Median
$9.12
Typical High
$9.12
BCBS
Setting
Professional
Modifier
Global
Typical Low
$14.79
Median
$15.85
Typical High
$16.60
Cigna
Setting
Facility
Modifier
Global
Typical Low
$10.96
Median
$31.62
Typical High
$61.66
Cigna
Setting
Professional
Modifier
Global
Typical Low
$6.76
Median
$11.48
Typical High
$22.91
Lucent Health
Setting
Facility
Modifier
Global
Typical Low
$70.79
Median
$70.79
Typical High
$100.00
United
Setting
Facility
Modifier
Global
Typical Low
$6.17
Median
$14.79
Typical High
$15.85
United
Setting
Professional
Modifier
Global
Typical Low
$6.17
Median
$9.55
Typical High
$20.89

Where Tennessee 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.

Tennessee· 50th of 51

$11.75

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.