C-peptide test cost in New York, NY — inpatient
In New York-Newark-Jersey City, NY-NJ, 30 hospitals list a cash price for C-peptide blood test as an inpatient: from $20.81 to $1,262.00, with a median of $45.78. The lowest listed price is at Jersey Shore University Medical Center — $24.97 less than the median here. Across New York, the median is $76.84 at 110 hospitals.
Cash prices at 30 facilities across 21 cities for code 84681, as an inpatient (admitted to hospital) . Collected Sep 29, 2026; the hospital files themselves were last updated between Oct 28, 2025 and Aug 13, 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 New York-Newark-Jersey City, NY-NJ.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Jersey Shore University Medical Center lowest Neptune City, NJ · (732) 775-5500 C-PEPTIDE | $20.81 | $57.00 | $9.46–$57.00 | 63% | Dec 31, 2025 source file |
| Jersey Shore University Medical Center lowest Neptune City, NJ · (732) 775-5500 C PEPTIDE ULTRASENSITIVE | $20.81 | $314.00 | $52.12–$314.00 | 93% | Dec 31, 2025 source file |
| Jersey Shore University Medical Center lowest Neptune City, NJ · (732) 775-5500 ASSAY OF C-PEPTIDE | $20.81 | $174.00 | $28.88–$174.00 | 88% | Dec 31, 2025 source file |
| Jersey Shore University Medical Center lowest Neptune City, NJ · (732) 775-5500 C PEPTIDE QST | $20.81 | $255.00 | $42.33–$255.00 | 92% | Dec 31, 2025 source file |
| Newton Medical Center Newton, NJ · (973) 383-2121 C-Peptide | $23.93 | $58.00 | — | 59% | — source file |
| University Hospital Newark, NJ · (973) 972-4300 ASSAY OF C-PEPTIDE | $23.93 | $156.06 | $14.08–$148.26 | 85% | Aug 13, 2026 source file |
| CentraState Medical Center Freehold Township, NJ · (732) 294-7012 C-Peptide | $23.93 | $184.00 | — | 87% | — source file |
| Morristown Medical Center Morristown, NJ · (973) 971-5450 C-Peptide | $23.93 | $58.00 | — | 59% | — source file |
| Overlook Medical Center Summit, NJ · (908) 522-2000 C-Peptide | $23.93 | $58.00 | — | 59% | — source file |
| Hackensack Meridian Mountainside Medical Center Montclair, NJ · (973) 429-6000 C-peptide (protein) level | $23.93 | $203.70 | $20.81–$204.30 | 88% | — source file |
| Chilton Medical Center Pompton Plains, NJ · (973) 831-5000 C-Peptide | $23.93 | $58.00 | — | 59% | — source file |
| NYU Langone – Orthopedic Hospital New York, NY HC ASSAY OF C-PEPTIDE | $24.97 | $235.64 | $18.73–$235.64 | 89% | Jan 1, 2026 source file |
| NYU Langone Hospital - Suffolk Patchogue, NY · (631) 654-7100 HC ASSAY OF C-PEPTIDE | $24.97 | $235.64 | $18.73–$235.64 | 89% | Jan 1, 2026 source file |
| NYU Langone Mineola, NY HC ASSAY OF C-PEPTIDE | $24.97 | $235.64 | $18.73–$235.64 | 89% | Jan 1, 2026 source file |
| NYU Langone Brooklyn, NY HC ASSAY OF C-PEPTIDE | $24.97 | $235.64 | $18.73–$235.64 | 89% | Jan 1, 2026 source file |
| NYU Langone – Tisch Hospital New York, NY · (212) 263-7300 HC ASSAY OF C-PEPTIDE | $24.97 | $235.64 | $18.73–$235.64 | 89% | Jan 1, 2026 source file |
| The Valley Hospital Paramus, NJ · (201) 447-8000 REF C-PEPTIDE REACTIVITY | $34.20 | $57.00 | $16.65–$66.38 | 40% | — source file |
| Bronx-Lebanon Hospital Center - Concourse Division Bronx, NY · (212) 588-7000 C-PEPTIDE | $45.78 | $45.78 | — | — | — source file |
| BronxCare Hospital Center - Fulton Campus Bronx, NY · (212) 588-7000 C-PEPTIDE | $45.78 | $45.78 | — | — | — source file |
| Hunterdon Medical Center Flemington, NJ · (908) 788-6100 C PEPTIDE | $67.61 | $216.00 | $172.80–$183.60 | 69% | — source file |
| Englewood Health Englewood, NJ · (201) 894-3000 C-Peptide Reactivity 84681 | $69.40 | $694.00 | $54.27–$555.20 | 90% | Feb 2, 2026 source file |
| The Valley Hospital Paramus, NJ · (201) 447-8000 ASSAY OF C-PEPTIDE 6075352 | $103.80 | $173.00 | $16.65–$147.05 | 40% | — source file |
| Maimonides Medical Center Brooklyn, NY · (718) 283-6000 C-PEPTIDE | $106.00 | $106.00 | — | — | Apr 1, 2026 source file |
| Mount Sinai Morningside New York, NY HC Cpeptide | $117.00 | $130.00 | — | 10% | Apr 1, 2026 source file |
| The Mount Sinai Hospital New York, NY · (212) 241-7981 HC Cpeptide | $117.00 | $130.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Brooklyn Brooklyn, NY HC Cpeptide | $117.00 | $130.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Queens Long Island, NY HC Cpeptide | $117.00 | $130.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Behavioral Health Center New York, NY HC Cpeptide | $117.00 | $130.00 | — | 10% | Apr 1, 2026 source file |
| Nassau University Medical Center East Meadow, NY · (516) 572-0123 C-Peptide | $140.86 | $201.22 | — | 30% | Oct 28, 2025 source file |
| University Hospital of Brooklyn Brooklyn, NY · (718) 270-1000 84681 - ASSAY OF C-PEPTIDE | $145.00 | $145.00 | $15.00–$54.00 | — | — source file |
| New York Community Hospital of Brooklyn Brooklyn, NY · (718) 692-5302 C-PEPTIDE | $155.24 | $155.24 | — | — | Apr 1, 2026 source file |
| Englewood Health Englewood, NJ · (201) 894-3000 C-Peptide, Ultrasensitive (Endocrine Sciences) 84681 | $208.00 | $2,080.00 | $162.66–$1,664.00 | 90% | Feb 2, 2026 source file |
| Westchester Medical Center Valhalla, NY · (914) 493-7000 ASSAY OF C-PEPTIDE | $250.00 | $250.00 | $75.00–$250.00 | — | Jul 28, 2026 source file |
| Good Samaritan Hospital Suffern, NY · (914) 368-5000 C-Peptide, Serum LC | $331.00 | $331.00 | $99.30–$231.70 | — | Jun 29, 2026 source file |
| Saint Peters University Hospital New Brunswick, NJ · (732) 745-8600 C-PEPTIDE | $1,262.00 | $1,275.00 | $13.00–$1,275.00 | 1% | — source file |
Inpatient: lowest $20.81, median $45.78, highest $1,262.00 — a 60.6× difference within the same market.
As an outpatient, the same code is billed by 70 facilities here, median $24.97 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 12 of 15 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.
3 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 84681 ($93.00). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.
| Brookdale Hospital Medical Center Brooklyn, NYQ-C-PEPTIDE | $0.01 | file |
| Interfaith Medical Center Brooklyn, NYQ-C-PEPTIDE | $0.01 | file |
| Kingsbrook Jewish Medical Center Brooklyn, NYQ-C-PEPTIDE | $0.01 | file |