Lab tests CPT 84681 District of Columbia Outpatient

C-peptide test cost in District of Columbia

In District of Columbia, 4 hospitals publish a cash price for C-peptide blood test: from $59.16 to $205.76, with a median of $154.89. The lowest price is at National Rehabilitation Hospital (Washington). The highest price is 3.5× the lowest.

Outpatient cash prices, one line per hospital — its lowest listed price for code 84681. Prices for both sides of the body and inpatient prices are not mixed in. Collected Sep 29, 2026. See them on a map

Lowest$59.16National Rehabilitation Hospital
Median$154.89half pay less
Highest$205.76in District of Columbia
Lowest saves$95.73vs the median

Hospitals in District of Columbia, cheapest first

HospitalCash price List priceFile date
National Rehabilitation Hospital lowest Washington · Washington-Arlington-Alexandria, DC-VA-MD-WV C PEPTIDE $59.16 $91.01 Apr 1, 2026
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Children's National Hospital Washington · Washington-Arlington-Alexandria, DC-VA-MD-WV C Peptide $149.00 $298.00 —
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MedStar Washington Hospital Center Washington · Washington-Arlington-Alexandria, DC-VA-MD-WV C PEPTIDE $160.77 $247.34 Apr 1, 2026
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MedStar Georgetown Hospital Northwest Washington · Washington-Arlington-Alexandria, DC-VA-MD-WV C PEPTIDE $205.76 $316.56 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
Washington-Arlington-Alexandria, DC-VA-MD-WV 4 $59.16 $154.88

What it is

A C-peptide test shows how much insulin the pancreas is making. It helps tell type 1 from type 2 diabetes and find the cause of low blood sugar.

What the price covers

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

C-peptide blood test in other states

Median cash price across the state's hospitals.