Lab tests CPT 83735 Outpatient

Magnesium test cost in Toledo, OH

In Toledo, OH, 5 hospitals list a cash price for Magnesium blood test: from $31.70 to $56.32, with a median of $49.80. The lowest listed price is at Wood County Hospital Association — $18.10 less than the median here. Across Ohio, the median is $33.30 at 100 hospitals.

Cash prices at 5 facilities across 4 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 Apr 1, 2026.

Lowest$31.70Wood County Hospital Association
Median$49.80half pay less
Highest$56.32in this market
Difference1.8×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 Toledo, OH.

median
Lowest $31.70Highest $114.10

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Wood County Hospital Association lowest Bowling Green, OH MAGNESIUM 24HR URINE $31.70 $31.70 $24.73–$30.75 — —
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Wood County Hospital Association lowest Bowling Green, OH MAGNESIUM RBC - **when encounter is for Outpatient Labs Only** $31.70 $31.70 $3.31–$30.75 — —
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Wood County Hospital Association lowest Bowling Green, OH MAGNESIUM RBC $31.70 $31.70 $24.73–$30.75 — —
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Wood County Hospital Association lowest Bowling Green, OH MAGNESIUM 24HR URINE - **when encounter is for Outpatient Labs Only** $31.70 $31.70 $3.31–$30.75 — —
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Wood County Hospital Association Bowling Green, OH URORISK DIAGNOSTIC PROFILE 9TH COMPONENT - **when encounter is for Outpatient Labs Only** $32.55 $32.55 $3.31–$31.57 — —
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Wood County Hospital Association Bowling Green, OH URORISK DIAGNOSTIC PROFILE 9TH COMPONENT $32.55 $32.55 $25.39–$31.57 — —
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Wood County Hospital Association Bowling Green, OH MAGNESIUM $42.75 $42.75 $33.35–$41.47 — —
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Wood County Hospital Association Bowling Green, OH MAGNESIUM - **when encounter is for Outpatient Labs Only** $42.75 $42.75 $3.31–$41.47 — —
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Nationwide Children's Hospital Toledo, LLC Toledo, OH HC SO MAGNESIUM $45.00 $75.00 $18.75–$57.75 40% —
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Mercy Health St Vincent Medical Center LLC Toledo, OH HC So Magnesium $49.80 $83.00 — 40% —
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Mercy Health St Vincent Medical Center LLC Oregon, OH HC So Magnesium $49.80 $83.00 — 40% —
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Fulton County Health Center Wauseon, OH Magnesium level $56.32 $80.46 — 30% Apr 1, 2026
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Mercy Health St Vincent Medical Center LLC Toledo, OH HC Assay of Magnesium $90.60 $151.00 — 40% —
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Mercy Health St Vincent Medical Center LLC Oregon, OH HC Assay of Magnesium $90.60 $151.00 — 40% —
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Mercy Health St Vincent Medical Center LLC Toledo, OH HC So Magnesium $92.40 $154.00 — 40% —
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Mercy Health St Vincent Medical Center LLC Toledo, OH HC Assay of Magnesium $96.60 $161.00 — 40% —
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Nationwide Children's Hospital Toledo, LLC Toledo, OH HC ASSAY OF MAGNESIUM $107.40 $179.00 $44.75–$137.83 40% —
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Wood County Hospital Association Bowling Green, OH IONIZED MAGNESIUM (ST. CHARLES) - **when encounter is for Outpatient Labs Only** $114.10 $114.10 $3.31–$110.68 — —
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Wood County Hospital Association Bowling Green, OH IONIZED MAGNESIUM (ST. CHARLES) $114.10 $114.10 $89.00–$110.68 — —
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Outpatient: lowest $31.70, median $49.80, highest $56.32 — a 1.8× difference within the same market.

As an inpatient, the same code is billed by 5 facilities here, median $49.80. 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 1 of 2 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it 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 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.