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Also reported in: nmol/L, pmol/L
Your C-Peptide is within the normal range, indicating your pancreatic beta cells are functioning and producing insulin. This helps is consistent with Type 2 diabetes (rather than Type 1) when blood sugar is elevated.
C-Peptide is co-secreted with insulin by the pancreatic beta cells — it directly measures how much insulin the pancreas is producing. A very low C-Peptide with high glucose is consistent with Type 1 diabetes or complete beta cell destruction.
Seek urgent endocrinology care. Insulin therapy is needed immediately. This is consistent with insulin-dependent diabetes.
C-Peptide: {{value}} {{unit}} — very low (ref: {{low}}–{{high}})Low C-Peptide alongside elevated blood glucose indicates reduced or absent pancreatic insulin production — consistent with Type 1 diabetes, LADA (latent autoimmune diabetes in adults), or end-stage Type 2 diabetes. C-Peptide is especially useful for distinguishing Type 1 from Type 2.
See your doctor for GAD65 antibody testing and comprehensive diabetes classification. Insulin therapy is likely needed.
C-Peptide: {{value}} {{unit}} — below reference range (ref: {{low}}–{{high}})Borderline low C-Peptide suggests modest reduction in beta cell mass or function. This may indicate early autoimmune beta cell loss or prolonged Type 2 diabetes with beta cell exhaustion.
Check GAD65 antibodies to assess for autoimmune beta cell destruction. Monitor blood sugar closely.
C-Peptide: {{value}} {{unit}} — borderline lowYour C-Peptide is within the normal range, indicating your pancreatic beta cells are functioning and producing insulin. This helps is consistent with Type 2 diabetes (rather than Type 1) when blood sugar is elevated.
No action needed in the context of normal glucose. This is a healthy result.
C-Peptide: {{value}} {{unit}} — within reference rangeYour C-Peptide is right in the healthy midrange, reflecting a well-functioning pancreas producing appropriate insulin for your body's needs.
Excellent result. No action needed.
C-Peptide: {{value}} {{unit}} — optimalBorderline high C-Peptide often reflects insulin resistance — the pancreas is producing more insulin than baseline to overcome resistant cells. This is a compensatory response to early metabolic dysfunction.
Address insulin resistance through dietary changes and exercise. Check HOMA-IR (a score that estimates insulin resistance) for a complete picture.
C-Peptide: {{value}} {{unit}} — borderline highHigh C-Peptide indicates the pancreas is overproducing insulin — most commonly in response to significant insulin resistance (Type 2 diabetes, metabolic syndrome, obesity). Rarely, an insulinoma (insulin-secreting pancreatic tumor) may contribute to autonomous C-Peptide and insulin overproduction.
See your doctor. If hypoglycemic episodes occur, insulinoma workup is needed. If metabolic syndrome is present, aggressive insulin resistance management is indicated.
C-Peptide: {{value}} {{unit}} — above reference range (ref: {{low}}–{{high}})Very high C-Peptide suggests either an insulinoma producing insulin autonomously (causing recurrent very low blood sugar) or very large insulin resistance requiring massive pancreatic output to maintain blood sugar control.
Seek urgent medical evaluation. If hypoglycemia is present, insulinoma is a likely diagnosis requiring pancreatic imaging. If hyperglycemic, noticeable insulin resistance management is urgent.
C-Peptide: {{value}} {{unit}} — very high (ref: {{low}}–{{high}})Upload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.