Lab tests CPT 84100 Outpatient

Phosphorus test cost in Fremont, MI

In Fremont, MI, 1 hospital lists a cash price for phosphorus (phosphate) blood test: from $14.00 to $14.00, with a median of $14.00. Across Michigan, the median is $21.00 at 85 hospitals.

Cash prices at 1 facility for code 84100, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 22, 2026; the hospital files themselves were last updated between — and —.

Lowest$14.00Corewell Health Gerber Hospital
Median$14.00half pay less
Highest$14.00in this market
Difference1.0×highest vs lowest

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Corewell Health Gerber Hospital Fremont, MI · (231) 924-3300 Hc Phosphorous Level $14.00 $14.00 — — —
source file

Outpatient: lowest $14.00, median $14.00, highest $14.00.

As an inpatient, the same code is billed by 1 facility here, median $14.00. 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 phosphorus test measures phosphate in the blood. It is used with calcium for kidney disease, bone disease and parathyroid problems.

What the price covers

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