Phosphorus test cost in Fresno, CA — inpatient
In Fresno, CA, 6 hospitals list a cash price for phosphorus (phosphate) blood test as an inpatient: from $40.30 to $75.60, with a median of $64.00. The lowest listed price is at Saint Agnes Medical Center — $23.70 less than the median here. Across California, the median is $75.60 at 198 hospitals.
Cash prices at 6 facilities across 2 cities for code 84100, as an inpatient (admitted to hospital) . Collected Sep 27, 2026; the hospital files themselves were last updated between Mar 31, 2026 and Jun 18, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Fresno, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Saint Agnes Medical Center lowest Fresno, CA · (559) 450-3000 HC Phosphorus File of Mar 31, 2026 · source file | $40.30 | $62.00 | $4.65–$55.80 | 35% |
| Community Regional Medical Center Fresno, CA · (559) 459-6000 PHOSPHORUS SERUM OR PLASMA File of Jun 18, 2026 · source file | $64.00 | $80.00 | $20.40–$88.00 | 20% |
| Clovis Community Medical Center Clovis, CA · (559) 324-4000 PHOSPHORUS SERUM OR PLASMA File of Jun 15, 2026 · source file | $64.00 | $80.00 | $20.40–$88.00 | 20% |
| Fresno Heart and Surgical Hospital Fresno, CA · (559) 459-6000 PHOSPHORUS SERUM OR PLASMA File of Jun 16, 2026 · source file | $64.00 | $80.00 | $20.40–$88.00 | 20% |
| Community Behavioral Health Center Fresno, CA · (559) 459-6000 PHOSPHORUS SERUM OR PLASMA File of Jun 18, 2026 · source file | $64.00 | $80.00 | $20.40–$88.00 | 20% |
| Kaiser Foundation Hospital - Fresno Fresno, CA · (559) 448-4500 ASSAY OF PHOSPHORUS INORGANIC source file | $75.60 | $135.00 | $5.00–$15.00 | 44% |
Inpatient: lowest $40.30, median $64.00, highest $75.60 — a 1.9× difference within the same market.
As an outpatient, the same code is billed by 7 facilities here, median $64.00 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 5 of 6 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 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.