Magnesium test cost in New Orleans, LA
In New Orleans-Metairie, LA, 13 hospitals list a cash price for magnesium blood test: from $3.96 to $50.96, with a median of $12.69. The lowest listed price is at Ochsner Clinic Foundation — $8.73 less than the median here. Across Louisiana, the median is $22.36 at 64 hospitals.
- The median here, $12.69, is 69% below the US median of $41.60.
- That is 1.9× Medicare's 2026 national rate for the same service ($6.70).
- Every hospital here lists a cash price below its full list price.
Cash prices at 13 facilities across 6 cities for code 83735, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 27, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Sep 16, 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 New Orleans-Metairie, LA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Ochsner Clinic Foundation lowest New Orleans, LA · (504) 842-3000 HC SUPERSAT URINE, MAGNESIUM File of Apr 1, 2026 · source file | $3.96 | $18.00 | $6.00–$33.17 | 78% |
| Ochsner Medical Center – Kenner Kenner, LA · (504) 464-8065 HC SUPERSAT URINE, MAGNESIUM File of Sep 16, 2026 · source file | $5.04 | $18.00 | $6.03–$37.99 | 72% |
| St Bernard Parish Hospital Chalmette, LA · (504) 826-9500 HC SUPERSAT URINE, MAGNESIUM File of Apr 1, 2026 · source file | $5.76 | $18.00 | $2.81–$23.42 | 68% |
| Ochsner Clinic Foundation New Orleans, LA · (504) 842-3000 HC MAGNESIUM, RBC File of Apr 1, 2026 · source file | $7.92 | $36.00 | $6.00–$33.17 | 78% |
| Ochsner Clinic Foundation New Orleans, LA · (504) 842-3000 HC STONE/URORISK-MAGNESIUM, UR+2 more lines at this price File of Apr 1, 2026 · source file | $8.36 | $38.00 | $6.00–$34.20 | 78% |
| Ochsner Clinic Foundation New Orleans, LA · (504) 842-3000 HC MAGNESIUM File of Apr 1, 2026 · source file | $9.24 | $42.00 | $6.00–$37.80 | 78% |
| Ochsner Medical Center – Kenner Kenner, LA · (504) 464-8065 HC MAGNESIUM, RBC File of Sep 16, 2026 · source file | $10.08 | $36.00 | $6.03–$37.99 | 72% |
| St Bernard Parish Hospital Chalmette, LA · (504) 826-9500 HC MAGNESIUM, RBC File of Apr 1, 2026 · source file | $11.52 | $36.00 | $2.81–$27.00 | 68% |
| St Bernard Parish Hospital Chalmette, LA · (504) 826-9500 HC STONE/URORISK-MAGNESIUM, UR+2 more lines at this price File of Apr 1, 2026 · source file | $12.16 | $38.00 | $2.81–$28.50 | 68% |
| Lakeside Hospital Metairie, LA · (504) 988-5263 Labcorp Magnesium Urine+2 more lines at this price File of Jul 1, 2026 · source file | $12.60 | $90.00 | $10.05–$90.00 | 86% |
| East Jefferson General Hospital Metairie, LA · (504) 988-5263 Magnesium RBC+2 more lines at this price File of Jul 1, 2026 · source file | $12.60 | $90.00 | $10.05–$90.00 | 86% |
| Tulane Medical Center New Orleans, LA · (504) 988-5263 HC Assay of Magnesium+2 more lines at this price File of Jun 25, 2026 · source file | $12.60 | $90.00 | $10.05–$90.00 | 86% |
| St Charles Parish Hospital Luling, LA · (985) 785-3644 HC MAGNESIUM, URINE File of Apr 1, 2026 · source file | $12.69 | $47.00 | $6.00–$39.95 | 73% |
| Ochsner Medical Center – Kenner Kenner, LA · (504) 464-8065 HC MAGNESIUM, FECES File of Sep 16, 2026 · source file | $13.44 | $48.00 | $6.03–$41.23 | 72% |
| Ochsner Medical Center – Kenner Kenner, LA · (504) 464-8065 HC MAGNESIUM, URINE File of Sep 16, 2026 · source file | $15.12 | $54.00 | $6.03–$46.39 | 72% |
| Ochsner Medical Center – Kenner Kenner, LA · (504) 464-8065 HC MAGNESIUM File of Sep 16, 2026 · source file | $15.68 | $56.00 | $6.03–$48.10 | 72% |
| University Med Center New Orleans, LA · (504) 702-3000 Labcorp Magnesium Urine+6 more lines at this price File of Jul 1, 2026 · source file | $19.80 | $90.00 | $10.05–$90.00 | 78% |
| West Jefferson Medical Center Marrero, LA · (504) 347-5511 Magnesium RBC+6 more lines at this price File of Jun 30, 2026 · source file | $21.44 | $134.00 | $10.05–$9.78 | 84% |
| St Charles Parish Hospital Luling, LA · (985) 785-3644 HC MAGNESIUM File of Apr 1, 2026 · source file | $22.68 | $84.00 | $6.00–$71.40 | 73% |
| New Orleans East Hospital New Orleans, LA · (504) 592-6600 Magnesium Urine+2 more lines at this price File of Jun 24, 2026 · source file | $25.28 | $158.00 | $10.05–$94.80 | 84% |
| St Charles Parish Hospital Luling, LA · (985) 785-3644 HC MAGNESIUM, RBC File of Apr 1, 2026 · source file | $26.19 | $97.00 | $6.00–$82.45 | 73% |
| Ochsner Clinic Foundation New Orleans, LA · (504) 842-3000 HC CATHARTIC LAXATIVE PROF - MAGNESIUM, FECES File of Apr 1, 2026 · source file | $30.36 | $138.00 | $6.00–$124.20 | 78% |
| St Charles Parish Hospital Luling, LA · (985) 785-3644 HC MAGNESIUM, FECES File of Apr 1, 2026 · source file | $33.75 | $125.00 | $6.00–$106.25 | 73% |
| Ochsner Medical Center – Kenner Kenner, LA · (504) 464-8065 HC CATHARTIC LAXATIVE PROF - MAGNESIUM, FECES File of Sep 16, 2026 · source file | $38.64 | $138.00 | $6.03–$118.54 | 72% |
| St Charles Parish Hospital Luling, LA · (985) 785-3644 HC SUPERSAT URINE, MAGNESIUM File of Apr 1, 2026 · source file | $39.69 | $147.00 | $6.00–$124.95 | 73% |
| St Bernard Parish Hospital Chalmette, LA · (504) 826-9500 HC MAGNESIUM, FECES File of Apr 1, 2026 · source file | $40.00 | $125.00 | $2.81–$93.75 | 68% |
| Childrens Hospital New Orleans, LA · (504) 899-9511 Magnesium Fecal+6 more lines at this price File of Jun 24, 2026 · source file | $42.66 | $158.00 | $10.87–$77.25 | 73% |
| St Charles Surgical Hospital New Orleans, LA · (504) 529-6600 LCMC MAGNESIUM File of Aug 17, 2026 · source file | $45.14 | $128.00 | $6.57–$58.62 | 65% |
| Touro Infirmary New Orleans, LA · (504) 897-8247 Labcorp Magnesium Urine+4 more lines at this price File of Jul 1, 2026 · source file | $50.96 | $364.00 | $10.05–$8.74 | 86% |
| Touro Infirmary New Orleans, LA · (504) 897-8247 Magnesium Serum+1 more line at this price File of Jul 1, 2026 · source file | $54.74 | $391.00 | $10.05–$8.74 | 86% |
| East Jefferson General Hospital Metairie, LA · (504) 988-5263 Magnesium Fecal+5 more lines at this price File of Jul 1, 2026 · source file | $64.68 | $462.00 | $10.05–$96.56 | 86% |
| Lakeside Hospital Metairie, LA · (504) 988-5263 Labcorp Magnesium Blood+5 more lines at this price File of Jul 1, 2026 · source file | $64.68 | $462.00 | $10.05–$96.56 | 86% |
| Tulane Medical Center New Orleans, LA · (504) 988-5263 Magnesium Fecal+5 more lines at this price File of Jun 25, 2026 · source file | $64.68 | $462.00 | $10.05–$96.56 | 86% |
| West Jefferson Medical Center Marrero, LA · (504) 347-5511 Ej Ref Lab Magnesium RBC File of Jun 30, 2026 · source file | $73.92 | $462.00 | $10.05–$9.78 | 84% |
Outpatient: lowest $3.96, median $12.69, highest $50.96 — a 12.9× difference within the same market.
As an inpatient, the same code is billed by 6 facilities here, median $9.57. 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 11 of 13 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 2 it is 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 magnesium test is, what the price covers and why prices differ: Magnesium test explained.
3 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 83735 ($37.40). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.
| Hospital | Cash price | File |
|---|---|---|
| Childrens Hospital New Orleans, LALabcorp Magnesium Blood | $2.70 | file |
| St Charles Parish Hospital Luling, LAHC STONE/URORISK-MAGNESIUM, UR | $2.97 | file |
| Ochsner Medical Center – Kenner Kenner, LAHC STONE/URORISK-MAGNESIUM, UR | $3.08 | file |