Lab tests CPT 84100 Outpatient

Phosphorus test cost in Cincinnati, OH

In Cincinnati, OH-KY-IN, 14 hospitals list a cash price for phosphorus (phosphate) blood test: from $12.00 to $57.60, with a median of $39.60. The lowest listed price is at Fort Hamilton Hospital — $27.60 less than the median here. Across Ohio, the median is $35.75 at 131 hospitals.

Cash prices at 14 facilities across 8 cities for code 84100, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 29, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Jul 1, 2026.

Lowest$12.00Fort Hamilton Hospital
Median$39.60half pay less
Highest$57.60in this market
Difference4.8×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 Cincinnati, OH-KY-IN.

median
Lowest $12.00Highest $57.60

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Fort Hamilton Hospital lowest Hamilton, OH · (513) 867-2123 Hc Phosphorus Inorganic (Phosphate), Lc $12.00 $30.00 — 60% Apr 1, 2026
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St Elizabeth Edgewood Edgewood, KY · (859) 301-2000 HB PHOSPHORUS $14.22 $14.22 — — Apr 1, 2026
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McCullough-Hyde Memorial Hospital Oxford, OH · (513) 523-2111 HC Phosphorus $14.57 $19.43 — 25% Apr 1, 2026
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Bethesda North Cincinnati, OH · (513) 865-1111 HC Phosphorus $16.21 $21.61 — 25% Apr 1, 2026
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The Good Samaritan Hospital of Cincinnati, OH Cincinnati, OH · (513) 862-2601 HC Phosphorus $16.21 $21.61 — 25% Apr 1, 2026
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Children's Hospital Medical Center Cincinnati, OH · (513) 636-3333 Hb Hi Phosphorus, Serum $21.93 $43.00 $4.74–$43.00 49% —
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Children's Hospital Medical Center Cincinnati, OH · (513) 636-3333 Hb Phosphorus Serum $21.93 $43.00 $4.74–$43.00 49% —
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Fort Hamilton Hospital Hamilton, OH · (513) 867-2123 Hc Phosphorus Serum $35.20 $88.00 — 60% Apr 1, 2026
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West Chester Hospital West Chester, OH · (513) 298-7701 Hc Phosphorus Serum $39.60 $66.00 — 40% Jul 1, 2026
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University of Cincinnati Medical Center Cincinnati, OH · (513) 584-1000 Hc Phosphorus Serum $39.60 $66.00 — 40% Jul 1, 2026
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Atrium Medical Center Middletown, OH · (513) 420-5102 HC PHOSPHORUS $56.00 $56.00 — — Apr 1, 2026
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Mercy Health Anderson Hospital Cincinnati, OH · (513) 624-4500 HC Assay of Phosphorus Inorganic $57.60 $96.00 — 40% —
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The Jewish Hospital-Mercy Health Cincinnati, OH · (513) 686-3000 HC Assay of Phosphorus Inorganic $57.60 $96.00 — 40% —
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Mercy Health Clermont Hospital Batavia, OH · (513) 732-8278 HC Assay of Phosphorus Inorganic $57.60 $96.00 — 40% —
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Mercy Health West Hospital Cincinnati, OH · (513) 215-5000 HC Assay of Phosphorus Inorganic $57.60 $96.00 — 40% —
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Mercy Health Kings Mills Hospital Mason, OH · (513) 637-9999 HC Assay of Phosphorus Inorganic $57.60 $96.00 — 40% —
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Outpatient: lowest $12.00, median $39.60, highest $57.60 — a 4.8× difference within the same market.

As an inpatient, the same code is billed by 13 facilities here, median $39.60. 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 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 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.