C-peptide test cost in Buffalo, NY
In Buffalo-Cheektowaga, NY, 8 hospitals list a cash price for C-peptide blood test: from $51.00 to $218.00, with a median of $71.55. The lowest listed price is at Mount St. Mary's Hospital and 2 other hospitals — $20.55 less than the median here. Across New York, the median is $76.84 at 110 hospitals.
Cash prices at 8 facilities across 4 cities for code 84681, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 27, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Sep 1, 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 Buffalo-Cheektowaga, NY.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Mount St. Mary's Hospital lowest Lewiston, NY · (716) 297-4800 HC Assay of C-Peptide - C-Peptide | $51.00 | $51.00 | $10.00–$51.00 | — | — source file |
| Sisters of Charity Hospital lowest Buffalo, NY · (716) 862-1000 HC Assay of C-Peptide - C-Peptide | $51.00 | $51.00 | $10.00–$51.00 | — | — source file |
| Mercy Hospital of Buffalo lowest Buffalo, NY · (716) 826-7000 HC Assay of C-Peptide - C-Peptide | $51.00 | $51.00 | $10.00–$51.00 | — | — source file |
| Niagara Falls Memorial Medical Center Niagara Falls, NY · (716) 278-4000 ASSAY OF C-PEPTIDE | $54.46 | $77.80 | $19.77–$28.35 | 30% | — source file |
| Niagara Falls Memorial Medical Center Niagara Falls, NY · (716) 278-4000 C-PEPTIDE (PROTEIN) LEVEL | $59.91 | $85.58 | $19.77–$28.35 | 30% | — source file |
| Erie County Medical Center Buffalo, NY · (716) 898-3936 C-PEPTIDE | $88.64 | $133.81 | $15.55–$120.42 | 34% | Aug 25, 2026 source file |
| Bertrand Chaffee Hospital Springville, NY · (716) 592-2871 ASSAY OF C-PEPTIDE | $97.75 | $115.00 | $13.87–$115.00 | 15% | Sep 1, 2026 source file |
| Bertrand Chaffee Hospital Springville, NY · (716) 592-2871 C-PEPTIDE LAB | $97.75 | $115.00 | $13.87–$115.00 | 15% | Sep 1, 2026 source file |
| Roswell Park Cancer Institute Buffalo, NY C-Peptide | $182.70 | $182.70 | — | — | Apr 1, 2026 source file |
| Kaleida Health Buffalo, NY · (716) 859-8620 C-Peptide | $218.00 | $218.00 | — | — | Apr 1, 2026 source file |
Outpatient: lowest $51.00, median $71.55, highest $218.00 — a 4.3× difference within the same market.
As an inpatient, the same code is billed by 7 facilities here, median $88.64. 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 2 of 6 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it 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.