Lab tests CPT 84436 Outpatient

Total T4 test cost in Rapid City, SD

In Rapid City, SD, 3 hospitals list a cash price for total thyroxine (T4) blood test: from $46.14 to $58.40, with a median of $58.40. The lowest listed price is at Black Hills Surgical Hospital — $12.26 less than the median here. Across South Dakota, the median is $58.40 at 17 hospitals.

Cash prices at 3 facilities across 2 cities for code 84436, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 28, 2026; the hospital files themselves were last updated between Sep 1, 2026 and Sep 1, 2026.

Lowest$46.14Black Hills Surgical Hospital

Median$58.40half of hospitals charge less

Highest$58.40in this market

Difference1.3×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 Rapid City, SD.

median

Lowest $46.14Highest $58.40

Hospitals, cheapest first

Hospital	Cash price	List price	Insurers pay	Off list
Black Hills Surgical Hospital lowest Rapid City, SD · (605) 721-4700 THYROXINE TOTAL- source file	$46.14	$76.90	$6.73–$69.21	40%
Monument Health Rapid City Hospital Rapid City, SD · (605) 755-1000 Thyroxine (thyroid chemical), total File of Sep 1, 2026 · source file	$58.40	$73.00	$8.24–$74.83	20%
Monument Health Sturgis Hospital Sturgis, SD · (605) 720-2400 Thyroxine (thyroid chemical), total File of Sep 1, 2026 · source file	$58.40	$73.00	$10.83–$73.00	20%

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.

Outpatient: lowest $46.14, median $58.40, highest $58.40 — a 1.3× difference within the same market.

As an inpatient, the same code is billed by 1 facility here, median $46.14. 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 3 of 3 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it below every plan's rate. 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.