can a blood test be wrong

Medical vector diagram illustrating human body fluid compartments, mapping where CMP electrolytes like sodium and potassium balance between intracellular and extracellular blood plasma.

What your CMP electrolytes really mean, and when to check again

CMP electrolytes hide a quiet problem: a potassium of 3.6 is low by MedlinePlus and normal by another widely used reference. Only your lab's range counts.

✓ EDUCATIONAL

Written & edited by: Sameer Patel — Founder & Editor Calculators built on published formulas Educational information — not a substitute for medical advice