Lab tests CPT 84439 Outpatient

Free T4 test cost in Allentown, PA

In Allentown-Bethlehem-Easton, PA-NJ, 1 hospital lists a cash price for Free T4 (free thyroxine) thyroid blood test: from $10.37 to $10.37, with a median of $10.37. Across Pennsylvania, the median is $63.90 at 64 hospitals.

Cash prices at 1 facility for code 84439, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between — and —.

Lowest$10.37Hackettstown Medical Center
Median$10.37half pay less
Highest$10.37in this market
Difference1.0×highest vs lowest

Where each hospital's price falls

Each dot is one hospital's cash price on a scale from the lowest to the highest in Allentown-Bethlehem-Easton, PA-NJ.

median
Lowest $10.37Highest $118.83

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Hackettstown Medical Center lowest Hackettstown, NJ Thyroxine Free $10.37 $63.00 — 84% —
source file
Hackettstown Medical Center Hackettstown, NJ Thyroxine Free $118.83 $3,270.00 — 96% —
source file

Outpatient: lowest $10.37, median $10.37, highest $10.37.

As an inpatient, the same code is billed by 1 facility here, median $10.37. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.

What it is

A free T4 test measures thyroxine that is not bound to proteins, the active form of the main thyroid hormone. It is usually ordered with or after a TSH test to check for an underactive or overactive thyroid and to adjust thyroid medicine.

What the price covers

The price usually covers the free T4 test only. The blood draw and the TSH test (84443) are billed separately.