Lab services are not currently available. We're working to bring Feelrx Labs online soon — everything below is a preview of what's coming.
Quest / Metabolic Health
C-Peptide
### C-Peptide is a byproduct of insulin production, released into the bloodstream in equal amounts to insulin. Measuring C-Peptide levels in the serum provides valuable insights into how much insulin the pancreas is producing. This test is particularly useful for distinguishing between type 1 and type 2 diabetes, assessing insulin secretion in people with diabetes, and evaluating the functioning of pancreatic beta cells. It can also help monitor insulin production in individuals receiving insulin therapy, providing a clearer picture of their endogenous insulin production
Coming Soon
What this lab measures
### C-Peptide is a byproduct of insulin production, released into the bloodstream in equal amounts to insulin. Measuring C-Peptide levels in the serum provides valuable insights into how much insulin the pancreas is producing. This test is particularly useful for distinguishing between type 1 and type 2 diabetes, assessing insulin secretion in people with diabetes, and evaluating the functioning of pancreatic beta cells. It can also help monitor insulin production in individuals receiving insulin therapy, providing a clearer picture of their endogenous insulin production
How testing works
Order online
Choose your marker and add a brief medical history so your result has context from the first draw.
Visit a partner lab
Take your order to a certified Quest location for a short blood draw.
Clinician review
A licensed clinician reviews your result and shares clear interpretation with next steps.
FAQ
After ordering, visit a certified Quest partner location for a short blood draw. No insurance is required.
Feelrx / Start here
Know your baseline.
Order a panel online, draw at a certified partner lab, and receive a clear clinician review.
Coming Soon