Lab tests CPT 83735 Massachusetts Outpatient

Magnesium test cost in Massachusetts

In Massachusetts, 19 hospitals publish a cash price for Magnesium blood test: from $11.24 to $123.00, with a median of $32.42. The lowest price is at Boston Medical Center South (Brockton). The highest price is 10.9× the lowest.

Outpatient cash prices, one line per hospital — its lowest listed price for code 83735. Prices for both sides of the body and inpatient prices are not mixed in. Collected Sep 23, 2026.

Lowest$11.24Boston Medical Center South
Median$32.42half pay less
Highest$123.00in Massachusetts
Lowest saves$21.18vs the median

Hospitals in Massachusetts, cheapest first

HospitalCash price List priceFile date
Boston Medical Center South lowest Brockton · Boston-Cambridge-Newton, MA-NH HC Chg Assay of Magnesium $11.24 $24.97 —
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Boston Medical Center Brighton Boston · Boston-Cambridge-Newton, MA-NH HC Chg Assay of Magnesium $12.78 $28.39 —
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Lowell General Hospital Lowell · Boston-Cambridge-Newton, MA-NH HC Assay of Magnesium - Magnesium Urine $16.80 $24.00 —
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Melrosewakefield Healthcare Melrose · Boston-Cambridge-Newton, MA-NH HC Assay of Magnesium - Magnesium $16.80 $24.00 —
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Tufts Medical Center Boston · Boston-Cambridge-Newton, MA-NH HC Assay of Magnesium - Magnesium $16.80 $24.00 —
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The Mercy Hospital Inc Springfield · Springfield, MA HC Warde Magnesium RBC $17.55 $27.00 Mar 31, 2026
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Morton Hospital and Medical Center, Inc., Lifespan of Massachusetts - Taunton Inc Taunton · Providence-Warwick, RI-MA HC URINE MAGNESIUM $24.97 $24.97 —
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Holyoke Medical Center Holyoke · Springfield, MA Assay Of Magnesium $31.00 $31.00 —
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Boston Medical Center Boston · Boston-Cambridge-Newton, MA-NH HC Chg Assay of Magnesium $32.40 $72.00 —
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Saint Anne's Hospital, Lifespan of Massachusetts - Fall River Inc Fall River · Providence-Warwick, RI-MA HC URINE MAGNESIUM $32.42 $32.42 —
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Cambridge Health Alliance Cambridge · Boston-Cambridge-Newton, MA-NH HC Magnesium $38.00 $38.00 —
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UMass Memorial Health - Harrington Hospital, Inc. Southbridge · Worcester, MA HC Magnesium $57.00 $57.00 Apr 3, 2026
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Berkshire Medical Center Pittsfield · Pittsfield, MA Magnesium Serum $58.00 $61.05 Mar 25, 2026
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Fairview Hospital Great Barrington · Pittsfield, MA Magnesium Serum $58.00 $61.05 Mar 25, 2026
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North Adams Regional Hospital North Adams · Pittsfield, MA Magnesium Urine $58.00 $61.05 Mar 25, 2026
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HealthAlliance - Clinton Hospital Leominster · Worcester, MA HC Magnesium $59.00 $59.00 Mar 26, 2026
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Shriners Childrens - Boston Boston · Boston-Cambridge-Newton, MA-NH MAGNESIUM LEVEL $64.90 $64.90 —
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UMass Memorial Health - Milford Regional Medical Center, Inc. Milford · Worcester, MA Assay of magnesium $85.00 $85.00 —
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UMass Memorial Medical Center Worcester · Worcester, MA HC Magnesium $123.00 $123.00 Mar 26, 2026
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By metro area

Each metro page compares every listing, including prices for both sides of the body.

Metro areaHospitals LowestMedian
Boston-Cambridge-Newton, MA-NH 8 $11.24 $16.80
Worcester, MA 4 $57.00 $72.00
Pittsfield, MA 3 $58.00 $58.00
Providence-Warwick, RI-MA 2 $24.97 $28.70
Springfield, MA 2 $17.55 $24.28

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.

Magnesium blood test in other states

Median cash price across the state's hospitals.