Free thyroxine (T4)
CPT 84439 • Laboratory
If you're paying cash
$17 – $157
Posted cash price at 9 hospitals in North Carolina. Hospitals must publish these; ask for the self-pay or cash price by name when you call.
See what your plan negotiated
Lowest
$2
Typical
$7
Highest
$291
99,047 negotiated rates from NC hospitals. These are what insurers pay, not what you would be billed.
About this procedure
Description coming soon. We're curating plain-language explainers for the most-searched procedures.