In Taylorville, IL, 1 hospital
lists a cash price for total thyroxine (T4) blood test:
from $25.50 to
$25.50, with a median of
$25.50.
Across Illinois, the median is $81.90 at
112 hospitals.
Cash prices at 1
facility
for code 84436,
as an outpatient — the setting a self-pay patient normally buys.
Collected Sep 27, 2026; the hospital files
themselves were last updated between — and
—.
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.
No cash discount This line's cash price equals the hospital's full list price. Many hospitals still reduce bills for uninsured patients: ask the billing office for its self-pay discount in writing. More
Outpatient:
lowest $25.50, median $25.50,
highest $25.50.
As an inpatient, the same code is
billed by 1
facility here, median
$25.50. Inpatient and outpatient prices are not comparable and
are kept on separate pages: the inpatient charge covers admission, not the same
purchase.
Cash or insurance?
At the one hospital here that publishes insurer rates for this code, the cash price is not 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 total T4 test measures all the thyroxine hormone in the blood, both bound and free. Most doctors now order free T4 (84439) instead, which is less affected by pregnancy and medicines.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.