Magnesium test cost in Cincinnati, OH
In Cincinnati, OH-KY-IN, 15 hospitals list a cash price for Magnesium blood test: from $12.56 to $50.40, with a median of $19.89. The lowest listed price is at Bethesda Hospital Inc. — $7.33 less than the median here. Across Ohio, the median is $33.30 at 100 hospitals.
Cash prices at 15 facilities across 9 cities 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 Apr 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 Cincinnati, OH-KY-IN.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Bethesda Hospital Inc. lowest Cincinnati, OH HC Magnesium (83735) | $12.56 | $16.74 | — | 25% | Apr 1, 2026 source file |
| Mercy Health Anderson Hospital LLC Cincinnati, OH HC So Magnesium | $19.20 | $32.00 | — | 40% | — source file |
| Jewish Hospital LLC Cincinnati, OH HC So Magnesium | $19.20 | $32.00 | — | 40% | — source file |
| Mercy Health Fairfield Hospital LLC Fairfield, OH HC So Magnesium | $19.20 | $32.00 | — | 40% | — source file |
| Mercy Health Clermont Hospital LLC Batavia, OH HC So Magnesium | $19.20 | $32.00 | — | 40% | — source file |
| Mercy Health West Hospital LLC Cincinnati, OH HC So Magnesium | $19.20 | $32.00 | — | 40% | — source file |
| Mercy Health Kings Mills Hospital LLC Mason, OH HC So Magnesium | $19.20 | $32.00 | — | 40% | — source file |
| Children's Hospital Medical Center Cincinnati, OH Hb Magnesium Urine | $19.89 | $39.00 | $6.70–$39.00 | 49% | — source file |
| McCullough-Hyde Memorial Hospital, Inc. Oxford, OH HC Magnesium (83735) | $20.60 | $27.47 | — | 25% | Apr 1, 2026 source file |
| The Good Samaritan Hospital of Cincinnati, OH Cincinnati, OH HC Magnesium (83735) | $22.88 | $30.50 | — | 25% | Apr 1, 2026 source file |
| Fort Hamilton Hospital Hamilton, OH Hc Urine Magnesium, Lc | $31.20 | $78.00 | — | 60% | Apr 1, 2026 source file |
| Kettering Medical Center Kettering, OH Hc Urine Magnesium, Lc | $31.20 | $78.00 | — | 60% | Apr 1, 2026 source file |
| Kettering Medical Center Miamisburg, OH Hc Urine Magnesium, Lc | $31.20 | $78.00 | — | 60% | Apr 1, 2026 source file |
| Children's Hospital Medical Center Cincinnati, OH Hb Magnesium Serum | $39.78 | $78.00 | $6.70–$78.00 | 49% | — source file |
| Children's Hospital Medical Center Cincinnati, OH Hb Hi Magnesium, Serum | $39.78 | $78.00 | $6.70–$78.00 | 49% | — source file |
| Mercy Health West Hospital LLC Cincinnati, OH HC Assay of Magnesium | $45.60 | $76.00 | — | 40% | — source file |
| Mercy Health Anderson Hospital LLC Cincinnati, OH HC Assay of Magnesium | $45.60 | $76.00 | — | 40% | — source file |
| Jewish Hospital LLC Cincinnati, OH HC Assay of Magnesium | $45.60 | $76.00 | — | 40% | — source file |
| Mercy Health Kings Mills Hospital LLC Mason, OH HC Assay of Magnesium | $45.60 | $76.00 | — | 40% | — source file |
| Mercy Health Clermont Hospital LLC Batavia, OH HC Assay of Magnesium | $45.60 | $76.00 | — | 40% | — source file |
| West Chester Hospital, LLC West Chester, OH Hc Magnesium Urine | $50.40 | $84.00 | — | 40% | Jul 1, 2026 source file |
| West Chester Hospital, LLC West Chester, OH Hc Magnesium Serum | $50.40 | $84.00 | — | 40% | Jul 1, 2026 source file |
| University of Cincinnati Medical Center, LLC Cincinnati, OH Hc Magnesium Serum | $50.40 | $84.00 | — | 40% | Jul 1, 2026 source file |
| University of Cincinnati Medical Center, LLC Cincinnati, OH Hc Magnesium Urine | $50.40 | $84.00 | — | 40% | Jul 1, 2026 source file |
| Mercy Health Fairfield Hospital LLC Fairfield, OH HC So1 Magnesium | $55.80 | $93.00 | — | 40% | — source file |
| Jewish Hospital LLC Cincinnati, OH HC So1 Magnesium | $55.80 | $93.00 | — | 40% | — source file |
| Mercy Health Anderson Hospital LLC Cincinnati, OH HC So1 Magnesium | $55.80 | $93.00 | — | 40% | — source file |
| Mercy Health Clermont Hospital LLC Batavia, OH HC So1 Magnesium | $55.80 | $93.00 | — | 40% | — source file |
| Mercy Health West Hospital LLC Cincinnati, OH HC So1 Magnesium | $55.80 | $93.00 | — | 40% | — source file |
| Mercy Health Kings Mills Hospital LLC Mason, OH HC So1 Magnesium | $55.80 | $93.00 | — | 40% | — source file |
| Fort Hamilton Hospital Hamilton, OH Hc Magnesium Blood Or Urine | $60.40 | $151.00 | — | 60% | Apr 1, 2026 source file |
| Kettering Medical Center Miamisburg, OH Hc Magnesium Blood Or Urine | $60.40 | $151.00 | — | 60% | Apr 1, 2026 source file |
| Kettering Medical Center Kettering, OH Hc Magnesium Blood Or Urine | $60.40 | $151.00 | — | 60% | Apr 1, 2026 source file |
| Children's Hospital Medical Center Cincinnati, OH Hb Magnesium, Rbc | $192.78 | $378.00 | $6.70–$378.00 | 49% | — source file |
Outpatient: lowest $12.56, median $19.89, highest $50.40 — a 4.0× difference within the same market.
As an inpatient, the same code is billed by 15 facilities here, median $20.60. 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 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.