Lab tests CPT 84100 Inpatient — admitted to hospital

Phosphorus test cost in Lake Charles, LA — inpatient

In Lake Charles, LA, 1 hospital lists a cash price for phosphorus (phosphate) blood test as an inpatient: from $4.76 to $4.76, with a median of $4.76. Across Louisiana, the median is $16.28 at 58 hospitals.

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

Lowest$4.76Ochsner American Legion Hospital
Median$4.76half pay less
Highest$4.76in this market
Difference1.0×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 Lake Charles, LA.

median
Lowest $4.76Highest $6.80

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Ochsner American Legion Hospital lowest Jennings, LA · (337) 616-7000 HC PHOSPHORUS, FECES $4.76 $14.00 $908.10 66% —
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Ochsner American Legion Hospital lowest Jennings, LA · (337) 616-7000 HC CATHARTIC LAXATIVE PROF - PHOSPHORUS, FECES $4.76 $14.00 $908.10 66% —
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Ochsner American Legion Hospital Jennings, LA · (337) 616-7000 HC PHOSPHORUS $6.80 $20.00 $908.10 66% —
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Inpatient: lowest $4.76, median $4.76, highest $4.76.

As an outpatient, the same code is billed by 1 facility here, median $4.76 — that is the price to compare if you are not being admitted.

Cash or insurance?

At the one hospital here that publishes insurer rates for this code, the cash price is below the highest rate a health plan has negotiated and 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 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.