C-peptide test cost in Indianapolis, IN
In Indianapolis-Carmel-Greenwood, IN, 20 hospitals list a cash price for C-peptide blood test: from $82.00 to $418.95, with a median of $303.60. The lowest listed price is at Hendricks Regional Health — $221.60 less than the median here. Across Indiana, the median is $132.53 at 86 hospitals.
Cash prices at 20 facilities across 12 cities for code 84681, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 29, 2026; the hospital files themselves were last updated between Mar 31, 2026 and Sep 25, 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 Indianapolis-Carmel-Greenwood, IN.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Hendricks Regional Health lowest Danville, IN · (317) 745-4451 HB SERUM C-PEPTIDE - ARUP source file | $82.00 | $205.00 | $8.10–$196.80 | 60% |
| Franciscan Health Indianapolis Indianapolis, IN · (317) 528-5000 C-Peptide source file | $83.39 | $361.00 | $16.44–$324.90 | 77% |
| Franciscan St Francis Health - Carmel Carmel, IN · (317) 528-5000 C-Peptide source file | $83.39 | $361.00 | $16.44–$324.90 | 77% |
| Rehabilitation Hospital Of Indiana Indianapolis, IN C-Peptide SerPl QN RHI+1 more line at this price source file | $87.21 | $153.00 | $20.81 | 43% |
| Franciscan Health Mooresville Mooresville, IN · (317) 831-1160 C-Peptide source file | $91.69 | $361.00 | $16.44–$324.90 | 75% |
| Major Hospital Shelbyville, IN · (317) 392-3211 C-peptide (protein) level File of Apr 7, 2026 · source file | $99.20 | $320.00 | $20.81–$316.80 | 69% |
| Riverview Health Noblesville, IN · (317) 773-0760 C PEPTIDE source file | $127.20 | $212.00 | — | 40% |
| Eskenazi Health Indianapolis, IN · (317) 880-4818 HC C-Peptide source file | $127.80 | $142.00 | $20.00–$142.00 | 10% |
| Hancock Regional Hospital Greenfield, IN · (317) 462-5544 C-peptide (protein) level File of Sep 25, 2026 · source file | $232.80 | $291.00 | $20.81–$873.00 | 20% |
| St. Vincent Carmel Hospital Carmel, IN · (317) 582-7000 C-PEPTIDE+1 more line at this price source file | $303.60 | $506.00 | $9.84–$47.45 | 40% |
| Carmel AmbSurg Carmel, IN C-PEPTIDE+1 more line at this price source file | $303.60 | $506.00 | $9.84–$47.45 | 40% |
| St. Vincent Fishers Hospital Fishers, IN · (317) 415-9000 C-PEPTIDE+1 more line at this price source file | $303.60 | $506.00 | $9.84–$47.45 | 40% |
| Naab Road Surgery Center Indianapolis, IN C-PEPTIDE+1 more line at this price source file | $303.60 | $506.00 | $9.84–$47.45 | 40% |
| Ascension St. Vincent Seton Speciality Hospital Indianapolis, IN C-PEPTIDE+1 more line at this price source file | $303.60 | $506.00 | $9.84–$47.45 | 40% |
| Endo Surgery Center Carmel, IN C-PEPTIDE+1 more line at this price source file | $303.60 | $506.00 | $9.84–$47.45 | 40% |
| St. Vincent Heart Center of Indiana Carmel, IN · (317) 583-5000 C-PEPTIDE+1 more line at this price source file | $303.60 | $506.00 | $9.84–$47.45 | 40% |
| Ascension St. Vincent Anderson Hospital Anderson, IN · (765) 649-2511 C-PEPTIDE+1 more line at this price source file | $313.20 | $522.00 | $9.84–$47.45 | 40% |
| Ascension St Vincent Mercy Elwood, IN · (765) 552-4743 C-PEPTIDE+1 more line at this price source file | $318.00 | $530.00 | $9.84–$47.45 | 40% |
| Johnson Memorial Hospital Franklin, IN · (317) 736-3300 C-peptide (protein) level File of May 5, 2026 · source file | $318.40 | $398.00 | $20.81–$386.06 | 20% |
| Witham Memorial Hospital Lebanon, IN · (765) 485-8000 C-peptide (protein) level File of Mar 31, 2026 · source file | $418.95 | $598.50 | $20.81–$1,496.25 | 30% |
| Eskenazi Health Indianapolis, IN · (317) 880-4818 HC C-Peptide source file | $815.40 | $906.00 | $20.00–$906.00 | 10% |
Outpatient: lowest $82.00, median $303.60, highest $418.95 — a 5.1× difference within the same market.
As an inpatient, the same code is billed by 15 facilities here, median $303.60. 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 9 of 18 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.