Lab tests CPT 84100 Maryland Outpatient

Phosphorus test cost in Maryland

In Maryland, 14 hospitals publish a cash price for phosphorus (phosphate) blood test: from $3.00 to $41.24, with a median of $5.79. The lowest price is at UPMC Western Maryland (Cumberland). The highest price is 13.7× the lowest.

Why Maryland prices look low: Maryland is the only state where a commission (the HSCRC) sets hospital rates for every payer, so its hospitals publish prices far below the rest of the country. A separate physician fee may still apply.

Outpatient cash prices, one line per hospital — its lowest listed price for code 84100. Prices for both sides of the body and inpatient prices are not mixed in. Collected Sep 29, 2026. See them on a map

Lowest$3.00UPMC Western Maryland
Median$5.79half pay less
Highest$41.24in Maryland
Lowest saves$2.79vs the median

Hospitals in Maryland, cheapest first

HospitalCash price List priceFile date
UPMC Western Maryland lowest Cumberland · Cumberland, MD-WV PHOSPHORUS $3.00 $5.00 —
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MedStar St. Mary's Hospital Leonardtown · Lexington Park, MD PHOSPHORUS INORGANIC $4.27 $4.36 Apr 1, 2026
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MedStar Franklin Square Medical Center Baltimore · Baltimore-Columbia-Towson, MD PHOSPHORUS INORGANIC (PHOSPHAT $4.28 $4.37 Apr 1, 2026
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Greater Baltimore Medical Center Towson · Baltimore-Columbia-Towson, MD HC Phosphorous $4.56 $4.65 —
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MedStar Montgomery Medical Center Olney · Washington-Arlington-Alexandria, DC-VA-MD-WV PHOSPHORUS INORGANIC $5.29 $5.40 Apr 1, 2026
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TidalHealth Peninsula Salisbury · Salisbury, MD HC PHOSPHORUS INORGANIC (PHOSPHATE) $5.49 $5.60 —
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MedStar Southern Hospital Center Clinton · Washington-Arlington-Alexandria, DC-VA-MD-WV PHOSPHORUS INORGANIC (PHOSPHAT $5.75 $5.87 Apr 1, 2026
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MedStar Harbor Hospital Baltimore · Baltimore-Columbia-Towson, MD PHOSPHORUS INORGANIC $5.83 $5.95 Apr 1, 2026
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MedStar Good Samaritan Hospital Baltimore · Baltimore-Columbia-Towson, MD PHOSPHORUS INORGANIC $5.87 $5.99 Apr 1, 2026
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Atlantic General Hospital Berlin · Ocean Pines, MD Phosphorus inorganic (phosphate) $6.26 $6.26 —
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Mercy Medical Center Baltimore · Baltimore-Columbia-Towson, MD HC ASSAY OF INORGANIC PHOSPHORUS $6.42 $6.55 —
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MedStar Union Memorial Hospital Baltimore · Baltimore-Columbia-Towson, MD PHOSPHORUS INORGANIC (PHOSPHAT $6.51 $6.64 Apr 1, 2026
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Mt. Washington Pediatric Hospital Baltimore · Baltimore-Columbia-Towson, MD PHOSPHORUS INORGANIC $7.39 $7.54 —
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Union Hospital of Cecil County Elkton · Philadelphia-Camden-Wilmington, PA-NJ-DE-MD PHOSPHORUS,SERUM $41.24 $41.24 Apr 1, 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
Baltimore-Columbia-Towson, MD 7 $4.28 $5.87
Washington-Arlington-Alexandria, DC-VA-MD-WV 2 $5.29 $5.52
Cumberland, MD-WV 1 $3.00 $3.00
Lexington Park, MD 1 $4.27 $4.27
Ocean Pines, MD 1 $6.26 $6.26
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD 1 $41.24 $41.24
Salisbury, MD 1 $5.49 $5.49

What it is

A phosphorus test measures phosphate in the blood. It is used with calcium for kidney disease, bone disease and parathyroid problems.

What the price covers

The price usually covers running the test. The blood draw (36415) is often billed as a separate line.

Phosphorus (phosphate) blood test in other states

Median cash price across the state's hospitals.