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Free T4 Blood Test

South Dakota rates for HCPCS 84439

A blood test that measures the amount of free, unbound, thyroxine, one of the main hormones produced by the thyroid gland, circulating in the bloodstream. It is used together with TSH to evaluate thyroid function and help diagnose an overactive or underactive thyroid.

Rates data updated July 2026.

Facilitymedian $85 · 10th–90th $56$1910%10%10th90th$85Professionalmedian $14 · 10th–90th $7$910%5%10%10th90th$14$5.0$20.0$100.0$500.0

Distribution of negotiated rates across all payers (price axis is log-scale). Facility and professional rates are different services and are charted separately. Need provider-level prices? Contact us.

Insurance Carrier
Aetna
Setting
Facility
Modifier
Global
Typical Low
$58.88
Median
$85.11
Typical High
$190.55
Aetna
Setting
Professional
Modifier
Global
Typical Low
$7.08
Median
$13.80
Typical High
$91.20
Avera
Setting
Facility
Modifier
Global
Typical Low
$8.32
Median
$9.12
Typical High
$13.49
Avera
Setting
Professional
Modifier
Global
Typical Low
$7.76
Median
$9.12
Typical High
$9.55
Cigna
Setting
Facility
Modifier
Global
Typical Low
$17.38
Median
$17.38
Typical High
$17.38
Cigna
Setting
Professional
Modifier
Global
Typical Low
$10.23
Median
$17.38
Typical High
$21.38
Medica
Setting
Facility
Modifier
Global
Typical Low
$8.71
Median
$60.26
Typical High
$154.88
Medica
Setting
Professional
Modifier
Global
Typical Low
$4.90
Median
$5.37
Typical High
$14.45
Sanford Health Plan
Setting
Professional
Modifier
Global
Typical Low
$12.88
Median
$20.89
Typical High
$24.55
United
Setting
Facility
Modifier
Global
Typical Low
$10.72
Median
$10.72
Typical High
$10.72
United
Setting
Professional
Modifier
Global
Typical Low
$3.80
Median
$8.13
Typical High
$12.59
Wellmark
Setting
Professional
Modifier
Global
Typical Low
$9.12
Median
$9.12
Typical High
$9.12