C-peptide test cost in Fresno, CA
In Fresno, CA, 6 hospitals list a cash price for C-peptide blood test: from $12.98 to $63.84, with a median of $24.00. The lowest listed price is at Madera Community Hospital — $11.02 less than the median here. Across California, the median is $63.84 at 144 hospitals.
Cash prices at 6 facilities across 3 cities for code 84681, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 24, 2026; the hospital files themselves were last updated between Jun 15, 2026 and Jul 30, 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 Fresno, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Madera Community Hospital lowest Madera, CA · (559) 706-8226 C-peptide (protein) level | $12.98 | $21.64 | $16.65–$22.89 | 40% | Jul 30, 2026 source file |
| Community Regional Medical Center Fresno, CA · (559) 459-6000 C-PEPTIDE;Q | $24.00 | $30.00 | $7.50–$93.13 | 20% | Jun 18, 2026 source file |
| Clovis Community Medical Center Clovis, CA · (559) 324-4000 C-PEPTIDE;Q | $24.00 | $30.00 | $7.50–$93.13 | 20% | Jun 15, 2026 source file |
| Community Behavioral Health Center Fresno, CA · (559) 459-6000 C-PEPTIDE;Q | $24.00 | $30.00 | $7.50–$93.13 | 20% | Jun 18, 2026 source file |
| Fresno Heart and Surgical Hospital Fresno, CA · (559) 459-6000 C-PEPTIDE;Q | $24.00 | $30.00 | $7.50–$93.13 | 20% | Jun 16, 2026 source file |
| Kaiser Foundation Hospital - Fresno Fresno, CA · (559) 448-4500 ASSAY OF C-PEPTIDE | $63.84 | $114.00 | $19.00–$60.00 | 44% | — source file |
Outpatient: lowest $12.98, median $24.00, highest $63.84 — a 4.9× difference within the same market.
As an inpatient, the same code is billed by 5 facilities here, median $24.00. 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 5 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 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.
1 row held back from this comparison
It is 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.
| Saint Agnes Medical Center Fresno, CAHC Quest C-Peptide | $5.20 | file |