Lab tests CPT 83735 Inpatient — admitted to hospital

Magnesium test cost in Peru, IN — inpatient

In Peru, IN, 1 hospital lists a cash price for magnesium blood test as an inpatient: from $13.75 to $13.75, with a median of $13.75. Across Indiana, the median is $50.71 at 64 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 Apr 1, 2026 and Apr 1, 2026.

Lowest$13.75Dukes Health System LLC
Median$13.75half pay less
Highest$13.75in 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 Peru, IN.

median
Lowest $13.75Highest $111.10

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Dukes Health System LLC lowest Peru, IN 83735 ASSAY OF MAGNESIUM $13.75 $25.00 $7.95–$22.50 45% Apr 1, 2026
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Dukes Health System LLC Peru, IN Magnesium, Serum CQ $111.10 $202.00 $64.24–$181.80 45% Apr 1, 2026
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Dukes Health System LLC Peru, IN Magnesium Serum $111.10 $202.00 $64.24–$181.80 45% Apr 1, 2026
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Dukes Health System LLC Peru, IN Magnesium Red Blood Cell (RL) $111.10 $202.00 $64.24–$181.80 45% Apr 1, 2026
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Dukes Health System LLC Peru, IN Magnesium, U (LC) $111.10 $202.00 $64.24–$181.80 45% Apr 1, 2026
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Dukes Health System LLC Peru, IN 83735 MAGNESIUM $111.10 $202.00 $64.24–$181.80 45% Apr 1, 2026
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Dukes Health System LLC Peru, IN Magnesium, Serum LC $111.10 $202.00 $64.24–$181.80 45% Apr 1, 2026
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Dukes Health System LLC Peru, IN 83735 L306266 MAGNESIUM $111.10 $202.00 $64.24–$181.80 45% Apr 1, 2026
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Inpatient: lowest $13.75, median $13.75, highest $13.75.

As an outpatient, the same code is billed by 1 facility here, median $12.50 — 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 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.