Last updated: July 2026 – Reviewed and written by Toni Eatros, MS, DiplAc, AP
This page includes older lab test education articles and PDF resources written by Toni Eatros, MS, DiplAc, AP. These articles explain common markers on basic bloodwork, including the CBC with differential, white blood cell patterns, red blood cell patterns, platelets, fibrinogen, methylation clues, electrolytes, glucose, HbA1C, kidney markers, protein markers, and liver enzymes.
Basic lab markers can provide useful clues when they are reviewed as patterns instead of isolated numbers. If you have brain fog, fatigue, anxiety, poor focus, or other unexplained symptoms and have been told your labs are normal, start with the newer Brain Fog and Normal Labs Resource Center or the main guide, Why Do I Feel So Bad When My Labs Are Normal?.
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CBC = Comprehensive Blood Count
CMP = Comprehensive Metabolic Panel