Magnesium test cost in Slidell, LA
In Slidell-Mandeville-Covington, LA, 1 hospital lists a cash price for Magnesium blood test: from $12.60 to $12.60, with a median of $12.60. Across Louisiana, the median is $24.31 at 13 hospitals.
Cash prices at 1 facility for code 83735, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Jul 1, 2026 and Jul 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 Slidell-Mandeville-Covington, LA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Lakeview Hospital lowest Covington, LA Magnesium RBC | $12.60 | $90.00 | $10.05–$90.00 | 86% | Jul 1, 2026 source file |
| Lakeview Hospital lowest Covington, LA Labcorp Magnesium Urine | $12.60 | $90.00 | $10.05–$90.00 | 86% | Jul 1, 2026 source file |
| Lakeview Hospital lowest Covington, LA HC Assay of Magnesium | $12.60 | $90.00 | $10.05–$90.00 | 86% | Jul 1, 2026 source file |
| Lakeview Hospital Covington, LA Magnesium Urine | $64.68 | $462.00 | $10.05–$96.56 | 86% | Jul 1, 2026 source file |
| Lakeview Hospital Covington, LA Labcorp Magnesium Blood | $64.68 | $462.00 | $10.05–$96.56 | 86% | Jul 1, 2026 source file |
| Lakeview Hospital Covington, LA Magnesium Serum | $64.68 | $462.00 | $10.05–$96.56 | 86% | Jul 1, 2026 source file |
| Lakeview Hospital Covington, LA Omega-Magnesium Urine | $64.68 | $462.00 | $10.05–$96.56 | 86% | Jul 1, 2026 source file |
| Lakeview Hospital Covington, LA Ej Ref Lab Magnesium RBC | $64.68 | $462.00 | $10.05–$96.56 | 86% | Jul 1, 2026 source file |
| Lakeview Hospital Covington, LA Magnesium Fecal | $64.68 | $462.00 | $10.05–$96.56 | 86% | Jul 1, 2026 source file |
Outpatient: lowest $12.60, median $12.60, highest $12.60.
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. 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 magnesium test measures the level of magnesium in the blood. Doctors order it for muscle cramps or weakness, an irregular heartbeat, low potassium or calcium that does not correct, and for people on diuretics, long-term acid-reducing drugs or with kidney disease.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.