Lab tests CPT 83735 Inpatient — admitted to hospital

Magnesium test cost in Ardmore, OK — inpatient

In Ardmore, OK, 1 hospital lists a cash price for magnesium blood test as an inpatient: from $20.25 to $20.25, with a median of $20.25. Across Oklahoma, the median is $32.50 at 28 hospitals.

Cash prices at 1 facility for code 83735, as an inpatient (admitted to hospital) . Collected Sep 22, 2026; the hospital files themselves were last updated between Jun 12, 2026 and Jun 12, 2026.

Lowest$20.25Mercy Hospital Headlton
Median$20.25half pay less
Highest$20.25in this market
Difference1.0×highest vs lowest

Where each hospital's price falls

Each dot is one hospital's cash price on a scale from the lowest to the highest in Ardmore, OK.

median
Lowest $20.25Highest $20.25

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Mercy Hospital Headlton lowest Healdton, OK Assay of Magnesium $20.25 $27.00 $14.85 25% Jun 12, 2026
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Mercy Hospital Headlton lowest Healdton, OK Magnesium $20.25 $27.00 $14.85 25% Jun 12, 2026
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Mercy Hospital Headlton lowest Healdton, OK Magnesium 24 Hr Urine $20.25 $27.00 $14.85 25% Jun 12, 2026
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Mercy Hospital Headlton lowest Healdton, OK Magnesium RBC $20.25 $27.00 $14.85 25% Jun 12, 2026
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Mercy Hospital Headlton lowest Healdton, OK Magnesium Stool $20.25 $27.00 $14.85 25% Jun 12, 2026
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Mercy Hospital Headlton lowest Healdton, OK Magnesium Urine $20.25 $27.00 $14.85 25% Jun 12, 2026
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Mercy Hospital Headlton lowest Healdton, OK Stone Risk Ua Magnesium $20.25 $27.00 $14.85 25% Jun 12, 2026
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Inpatient: lowest $20.25, median $20.25, highest $20.25.

As an outpatient, the same code is billed by 3 facilities here, median $24.05 — that is the price to compare if you are not being admitted.

Cash or insurance?

At the one hospital here that publishes insurer rates for this code, the cash price is not 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.