Lab tests CPT 84100 Inpatient — admitted to hospital

Phosphorus test cost in Massena, NY — inpatient

In Massena-Ogdensburg, NY, 3 hospitals list a cash price for phosphorus (phosphate) blood test as an inpatient: from $31.69 to $55.68, with a median of $51.28. The lowest listed price is at Slhs Massena — $19.59 less than the median here. Across New York, the median is $20.34 at 112 hospitals.

Cash prices at 3 facilities across 3 cities for code 84100, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 1, 2026.

Lowest$31.69Slhs Massena
Median$51.28half pay less
Highest$55.68in this market
Difference1.8×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 Massena-Ogdensburg, NY.

median
Lowest $31.69Highest $55.68

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Slhs Massena lowest Massena, NY · (315) 769-4234 HC PHOSPHORUS SERUM $31.69 $48.75 — 35% Apr 1, 2026
source file
Canton-Potsdam Hospital Potsdam, NY · (315) 265-3300 HC PHOSPHORUS SERUM $51.28 $78.90 — 35% Apr 1, 2026
source file
Gouverneur Hospital Gouverneur, NY · (315) 287-1000 HC PHOSPHORUS SERUM $55.68 $85.66 — 35% —
source file

Inpatient: lowest $31.69, median $51.28, highest $55.68 — a 1.8× difference within the same market.

As an outpatient, the same code is billed by 4 facilities here, median $47.65 — that is the price to compare if you are not being admitted.

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.