C-peptide test cost in Tulsa, OK
In Tulsa, OK, 16 hospitals list a cash price for C-peptide blood test: from $12.60 to $302.70, with a median of $87.13. The lowest listed price is at Muscogee (CREEK) Nation Medical Center — $74.53 less than the median here. Across Oklahoma, the median is $84.80 at 58 hospitals.
Cash prices at 16 facilities across 11 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 Jan 24, 2026 and Sep 26, 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 Tulsa, OK.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Muscogee (CREEK) Nation Medical Center lowest Okmulgee, OK · (918) 756-4233 C-peptide (protein) level | $12.60 | $21.00 | $16.00–$44.74 | 40% | Jan 24, 2026 source file |
| Pawhuska Hospital Pawhuska, OK · (918) 287-3232 C-peptide (protein) level | $54.88 | $98.00 | $20.39–$98.00 | 44% | Sep 26, 2026 source file |
| Wagoner Community Hospital Wagoner, OK · (918) 485-5514 C-PEPTIDE | $71.00 | $142.00 | $18.51–$20.40 | 50% | — source file |
| Ascension St. John Jenks Jenks, OK · (918) 994-8100 C PEPTIDE- 47802 | $79.64 | $215.25 | $21.89–$215.25 | 63% | — source file |
| Ascension St. John Medical Center Tulsa, OK · (918) 744-2296 C PEPTIDE- 47802 | $79.64 | $215.25 | $21.89–$215.25 | 63% | — source file |
| St. John Sapulpa Sapulpa, OK · (918) 224-4280 C PEPTIDE- 47802 | $79.64 | $215.25 | $21.89–$215.25 | 63% | — source file |
| St. John Sapulpa Sapulpa, OK · (918) 224-4280 C PEPTIDE- 47802 | $79.64 | $215.25 | $21.89–$215.25 | 63% | — source file |
| Ascension St. John Jenks Jenks, OK · (918) 994-8100 C PEPTIDE- 47802 | $79.64 | $215.25 | $21.89–$215.25 | 63% | — source file |
| St John Owasso Owasso, OK · (918) 274-5100 C PEPTIDE- 47802 | $79.64 | $215.25 | $21.89–$215.25 | 63% | — source file |
| St John Owasso Owasso, OK · (918) 274-5100 C PEPTIDE- 47802 | $79.64 | $215.25 | $21.89–$215.25 | 63% | — source file |
| St. John Broken Arrow Broken Arrow, OK · (918) 994-8100 C PEPTIDE- 47802 | $79.64 | $215.25 | $21.89–$215.25 | 63% | — source file |
| St. John Broken Arrow Broken Arrow, OK · (918) 994-8100 C PEPTIDE- 47802 | $79.64 | $215.25 | $21.89–$215.25 | 63% | — source file |
| Ascension St. John Medical Center Tulsa, OK · (918) 744-2296 C PEPTIDE- 47802 | $79.64 | $215.25 | $21.89–$215.25 | 63% | — source file |
| Saint Francis Hospital Yale Tulsa, OK · (918) 494-8467 Hc Assay Of C-Peptide | $94.62 | $236.55 | — | 60% | Apr 1, 2026 source file |
| Saint Francis Hospital South Tulsa, OK · (918) 307-6010 Hc Assay Of C-Peptide | $94.62 | $236.55 | — | 60% | Apr 1, 2026 source file |
| Hillcrest Hospital Claremore Claremore, OK · (918) 341-2556 C-peptide (protein) level | $123.90 | $413.00 | $18.51–$322.14 | 70% | — source file |
| Hillcrest Hospital Henryetta Henryetta, OK · (918) 650-1511 C-peptide (protein) level | $124.50 | $415.00 | $18.51–$415.00 | 70% | — source file |
| Hillcrest Hospital South Tulsa, OK · (918) 294-4499 C-peptide (protein) level | $146.70 | $489.00 | $8.74–$391.20 | 70% | — source file |
| Cleveland Area Hospital Cleveland, OK · (918) 358-2501 C PEPTIDE QST | $160.00 | $200.00 | $18.51–$200.00 | 20% | — source file |
| Bailey Medical Center Owasso, OK · (918) 376-8000 C-peptide (protein) level | $195.60 | $652.00 | $8.74–$652.00 | 70% | — source file |
| Hillcrest Medical Center Tulsa, OK · (918) 579-1000 C-peptide (protein) level | $302.70 | $1,009.00 | $12.49–$1,009.00 | 70% | — source file |
Outpatient: lowest $12.60, median $87.13, highest $302.70 — a 24.0× difference within the same market.
As an inpatient, the same code is billed by 13 facilities here, median $94.62. 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 13 of 14 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.