C-peptide test cost in Lexington, KY — inpatient
In Lexington-Fayette, KY, 4 hospitals list a cash price for C-peptide blood test as an inpatient: from $43.09 to $99.87, with a median of $90.68. The lowest listed price is at Eastern State Hospital — $47.59 less than the median here. Across Kentucky, the median is $138.85 at 76 hospitals.
Cash prices at 4 facilities for code 84681, as an inpatient (admitted to hospital) . Collected Sep 27, 2026; the hospital files themselves were last updated between Feb 28, 2026 and Apr 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 Lexington-Fayette, KY.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Eastern State Hospital lowest Lexington, KY · (859) 246-8000 C-PEPTIDE | $43.09 | $43.09 | $473.00–$1,143.91 | — | — source file |
| Saint Joseph East Lexington, KY · (859) 967-5000 HC LAB C-PEPTIDE | $85.16 | $212.00 | $192.92 | 60% | Feb 28, 2026 source file |
| University of Kentucky Hospital Lexington, KY · (859) 257-2278 Hc Assay Of C-Peptide - C-Peptide | $96.19 | $240.47 | — | 60% | Apr 1, 2026 source file |
| Saint Joseph Hospital Lexington, KY · (859) 313-1000 HC LAB C-PEPTIDE | $99.87 | $212.00 | $192.92 | 53% | Feb 28, 2026 source file |
Inpatient: lowest $43.09, median $90.68, highest $99.87 — a 2.3× difference within the same market.
As an outpatient, the same code is billed by 8 facilities here, median $122.50 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 3 of 3 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 3 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.