Lab tests CPT 84439 Inpatient — admitted to hospital

Free T4 test cost in Spooner, WI — inpatient

In Spooner, WI, 1 hospital lists a cash price for free T4 (free thyroxine) thyroid blood test as an inpatient: from $218.70 to $218.70, with a median of $218.70. Across Wisconsin, the median is $80.75 at 96 hospitals.

Cash prices at 1 facility for code 84439, as an inpatient (admitted to hospital) . Collected Sep 29, 2026; the hospital files themselves were last updated between Jul 20, 2026 and Jul 20, 2026.

Lowest$218.70Spooner Health System

Median$218.70half of hospitals charge less

Highest$218.70in 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 Spooner, WI.

median

Lowest $218.70Highest $227.70

Hospitals, cheapest first

Hospital	Cash price	List price	Insurers pay	Off list
Spooner Health System lowest Spooner, WI · (715) 635-2111 ASSAY OF FREE THYROXINE - REF File of Jul 20, 2026 · source file	$218.70	$243.00	$9.32–$230.85	10%
Spooner Health System Spooner, WI · (715) 635-2111 THYROXIN, FREE (FREE T4) File of Jul 20, 2026 · source file	$227.70	$253.00	$9.32–$230.85	10%

Hospital The hospital that published the price, its city and the line exactly as written in its price file.

Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More

List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More

Insurers pay The lowest and highest rates this hospital has agreed with insurance plans for the same item, from its price file. If the cash price is below what your plan pays and you have not met your deductible, paying cash can cost you less. More

Off list How much lower the cash price is than the list price.

Inpatient: lowest $218.70, median $218.70, highest $218.70.

As an outpatient, the same code is billed by 1 facility here, median $218.70 — that is the price to compare if you are not being admitted.

Cash or insurance?

At the one hospital here that publishes insurer rates for this code, the cash price is below the highest rate a health plan has negotiated. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.

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.