Peptide C (Propeptide of Procollagen Type I) in Serum/Plasma

What Is Peptide C Used For?

Peptide C is primarily measured to evaluate bone metabolism and diagnose or monitor conditions like osteoporosis, metabolic bone diseases, or certain genetic disorders that affect collagen production. It may also be used in research or specialized clinical scenarios where bone-related protein fragments are relevant.

How Is This Test Performed?

Your blood sample is drawn, typically from a vein in your arm. The blood is then processed to separate serum or plasma, where the Peptide C fragment is detected using a specialized laboratory technique (likely immunoassay or similar). Results are reported as a mass concentration in the sample.

What Does a Peptide C Test Tell You?

Elevated levels of Peptide C may indicate increased bone formation or collagen synthesis, which can be seen in conditions like hyperparathyroidism or certain growth disorders. Lower levels might suggest reduced bone formation or metabolic disturbances. However, this test is not a standalone diagnostic for most conditions and is often used alongside other tests.

Common Conditions Monitored

Peptide C testing is less commonly used in routine clinical practice but may be part of a broader evaluation for rare genetic disorders, metabolic bone diseases, or research studies. It is not typically ordered for general health screening or common conditions like diabetes or heart disease.