Peptide Biomarkers

3 articles in this topic.

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Chromogranin A: The Neuroendocrine Tumor Marker

Chromogranin A is the most widely used blood marker for neuroendocrine tumors. How it works, what elevates it, and why false positives from PPIs matter.

18 min read|Mar 20, 2026

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Peptide Biomarkers

Amyloid-Beta as an Alzheimer's Biomarker

Amyloid-beta peptide is the central biomarker in Alzheimer's diagnosis. CSF tests, blood tests, and PET imaging measure it. Here is what the evidence shows.

14 min read|Mar 21, 2026

Peptide Biomarkers

C-Peptide: The Crucial Diabetes Biomarker

C-peptide measures beta-cell function, differentiates diabetes types, and may have biological activity in neuropathy. Complete review of diagnostic and therapeutic evidence.

13 min read|Mar 21, 2026