C-Peptide
This test is crucial for understanding how well the pancreas' beta cells are working. It's especially helpful for distinguishing between type 1 and type 2 diabetes, monitoring the health of pancreatic or islet cell transplants, and identifying the cause of low blood sugar due to high insulin levels. This could mean finding out whether the body is producing too much insulin on its own or if insulin is being introduced from outside the body. Additionally, the C-Peptide test is more reliable than direct insulin measurements for certain assessments because it's less affected by blood sample handling.
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Stephanie Strudley
Stephanie Strudley, CNS, is a functional medicine nutritionist and the founder of Upstream Wellness. She helps driven, health-conscious adults who've done "everything right" and still don't feel like themselves — connecting the dots between symptoms, labs, and lifestyle to uncover what's actually going on. Her approach is shaped by an unconventional path: a background in ecology and systems biology, and her own experience navigating serious, unresolved health challenges before finding root-cause care herself. She doesn't believe in one-size-fits-all protocols or quick fixes — she believes health is more like solving a puzzle than following a formula, and her role is to help clients ask better questions, interpret their own data, and build a plan that fits their unique biology and life.
My websiteFocus areas
Cardiovascular Health
Gastrointestinal Health
Metabolic Health
Women's Health
States of practice
California
Colorado
Maryland
Massachusetts
Oregon
Texas
Washington