Lab tests CPT 84132 Outpatient

Potassium test cost in Helena, MT

In Helena, MT, 2 hospitals list a cash price for potassium blood test: from $5.48 to $27.00, with a median of $16.24. The lowest listed price is at St. Peter's Health — $10.76 less than the median here. Across Montana, the median is $40.80 at 21 hospitals.

Cash prices at 2 facilities across 2 cities for code 84132, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 29, 2026; the hospital files themselves were last updated between Dec 11, 2025 and Dec 11, 2025.

Lowest$5.48St. Peter's Health

Median$16.24half of hospitals charge less

Highest$27.00in this market

Difference4.9×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 Helena, MT.

median

Lowest $5.48Highest $85.68

Hospitals, cheapest first

Hospital	Cash price	List price	Insurers pay	Off list
St. Peter's Health lowest Helena, MT · (406) 442-2480 LABORATORY - CHEMISTRY source file	$5.48	$6.45	$6.45	15%
Billings Clinic Broadwater Townsend, MT · (406) 266-3186 Blood potassium level File of Dec 11, 2025 · source file	$27.00	$27.00	$18.90–$27.00	—
St. Peter's Health Helena, MT · (406) 442-2480 HC POTASSIUM; SERUM source file	$80.08	$94.21	$4.76	15%
St. Peter's Health Helena, MT · (406) 442-2480 HC POTASSIUM; SERUM - POC source file	$85.68	$100.80	$4.76	15%

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 $5.48, median $16.24, highest $27.00 — a 4.9× difference within the same market.

As an inpatient, the same code is billed by 1 facility here, median $80.08. 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 1 of 2 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 1 it is 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 potassium test measures the level of potassium in the blood. Doctors check it for people on diuretics or blood pressure drugs, with kidney disease, an irregular heartbeat, or vomiting and diarrhea.

What the price covers

The price usually covers running the test. The blood draw (36415) is often billed as a separate line.