Phosphorus test cost in Shreveport, LA
In Shreveport-Bossier City, LA, 3 hospitals list a cash price for phosphorus (phosphate) blood test: from $7.80 to $11.38, with a median of $8.40. The lowest listed price is at Ochsner LSU Health Shreveport — $0.60 less than the median here. Across Louisiana, the median is $16.78 at 56 hospitals.
Cash prices at 3 facilities for code 84100, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 28, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 1, 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 Shreveport-Bossier City, LA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Ochsner LSU Health Shreveport lowest Shreveport, LA · (318) 675-5058 HC PHOSPHORUS | $7.80 | $30.00 | $2.37–$22.50 | 74% | — source file |
| Ochsner LSU Health Shreveport lowest Shreveport, LA · (318) 675-5058 HC CATHARTIC LAXATIVE PROF - PHOSPHORUS, FECES | $7.80 | $30.00 | $2.37–$22.50 | 74% | — source file |
| Ochsner LSU Health Shreveport lowest Shreveport, LA · (318) 675-5058 HC PHOSPHORUS, FECES | $7.80 | $30.00 | $2.37–$22.50 | 74% | — source file |
| Ochsner LSU Health Shreveport - St. Mary Medical Center Shreveport, LA · (318) 626-4300 HC PHOSPHORUS, FECES | $8.40 | $30.00 | $2.37–$21.00 | 72% | — source file |
| Ochsner LSU Health Shreveport - St. Mary Medical Center Shreveport, LA · (318) 626-4300 HC PHOSPHORUS | $8.40 | $30.00 | $2.37–$21.00 | 72% | — source file |
| Ochsner LSU Health Shreveport - St. Mary Medical Center Shreveport, LA · (318) 626-4300 HC CATHARTIC LAXATIVE PROF - PHOSPHORUS, FECES | $8.40 | $30.00 | $2.37–$21.00 | 72% | — source file |
| Willis Knighton Medical Center Shreveport, LA · (318) 212-4000 Elect Qt Feces Phos Inorganp-M | $11.38 | $14.22 | — | 20% | Apr 1, 2026 source file |
| Willis Knighton Medical Center Shreveport, LA · (318) 212-4000 Phosphorus Inorganic | $23.75 | $29.69 | — | 20% | Apr 1, 2026 source file |
Outpatient: lowest $7.80, median $8.40, highest $11.38 — a 1.5× difference within the same market.
As an inpatient, the same code is billed by 4 facilities here, median $9.89. 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 2 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 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.