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Thyroxine Binding Globulin Blood Test

Iowa 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?

$17.78

Typical negotiated rate. In Iowa, July 2026.

Insurers have agreed to pay about $17.78 for this service. The price depends on where it is billed: about $14.79 from a physician practice, and about $28.18 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$14.79$11.48 to $35.48
FacilityA hospital or hospital-owned outpatient department$28.18$14.79 to $38.90

How much rates vary

Facilitymedian $28 · 10th to 90th $11 to $78Professionalmedian $15 · 10th to 90th $10 to $98
$10$20$50$100facility $28professional $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
$11.48
Median
$34.67
Typical High
$112.20
Aetna
Setting
Professional
Modifier
Global
Typical Low
$9.77
Median
$11.48
Typical High
$97.72
Cigna
Setting
Professional
Modifier
Global
Typical Low
$18.20
Median
$28.18
Typical High
$35.48
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$14.79
Median
$36.31
Typical High
$117.49
Medica
Setting
Facility
Modifier
Global
Typical Low
$14.79
Median
$19.05
Typical High
$46.77
Medica
Setting
Professional
Modifier
Global
Typical Low
$8.91
Median
$15.14
Typical High
$38.90
Midlands
Setting
Professional
Modifier
Global
Typical Low
$18.20
Median
$18.20
Typical High
$19.50
Midlands
Setting
Facility
Modifier
Global
Typical Low
$18.20
Median
$18.20
Typical High
$18.20
United
Setting
Facility
Modifier
Global
Typical Low
$14.79
Median
$14.79
Typical High
$33.88
United
Setting
Professional
Modifier
Global
Typical Low
$8.91
Median
$12.30
Typical High
$37.15
Wellmark
Setting
Professional
Modifier
Global
Typical Low
$11.75
Median
$14.79
Typical High
$14.79

Where Iowa 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.

Iowa· 17th of 51

$17.78

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.