C-peptide test cost in Portland, ME
In Portland-South Portland, ME, 6 hospitals list a cash price for C-peptide blood test: from $23.00 to $137.35, with a median of $50.95. The lowest listed price is at MaineHealth Mid Coast Hospital — $27.95 less than the median here. Across Maine, the median is $56.24 at 29 hospitals.
Cash prices at 6 facilities across 5 cities for code 84681, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Sep 9, 2025 and Apr 29, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Portland-South Portland, ME.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| MaineHealth Mid Coast Hospital lowest Brunswick, ME · (207) 729-0181 HC ASSAY OF C-PEPTIDE File of Sep 9, 2025 · source file | $23.00 | $23.00 | $17.28–$45.57 | — |
| Northern Light Mercy Hospital Portland, ME · (207) 879-3000 C-PEPTIDE REACTIVITY source file | $42.64 | $164.00 | $87.58–$124.97 | 74% |
| York Hospital York, ME · (207) 351-2478 ASSAY OF C-PEPTIDE source file | $46.80 | $78.00 | — | 40% |
| MaineHealth Maine Medical Center Portland, ME · (207) 662-0111 B* HC ASSAY OF C-PEPTIDE File of Sep 9, 2025 · source file | $55.10 | $55.10 | $20.81–$51.79 | — |
| Bridgton Hospital Bridgton, ME · (207) 647-6000 HC ASSAY OF C-PEPTIDE File of Apr 29, 2026 · source file | $127.00 | $411.88 | $20.81–$373.58 | 69% |
| Southern Maine Medical Center Biddeford, ME · (207) 662-0111 HC ASSAY OF C-PEPTIDE File of Sep 9, 2025 · source file | $137.35 | $137.35 | $20.81–$129.11 | — |
| York Hospital York, ME · (207) 351-2478 C-PEPTIDE source file | $157.80 | $263.00 | — | 40% |
Outpatient: lowest $23.00, median $50.95, highest $137.35 — a 6.0× difference within the same market.
As an inpatient, the same code is billed by 5 facilities here, median $46.80. 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 3 of 5 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 1 it is 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 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.