[1]
High trust
MedlinePlus: Hematocrit test
Plain-language explanation of what hematocrit measures and why it is often checked as part of a CBC.
What is hematocrit in a blood test?
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Hematocrit is the percentage of blood made up of red blood cells. AI can explain the term and how it relates to a CBC, but high or low hematocrit needs clinician review with hemoglobin, red blood cell counts, hydration, symptoms, pregnancy status, and the lab's reference range.
Indexed sources
[2]
High trust
MedlinePlus: Complete blood count
Patient-facing overview showing hematocrit as a standard blood count value interpreted with related CBC results.
[3]
High trust
MedlinePlus Medical Encyclopedia: Hematocrit
Patient education page explaining hematocrit and why the result depends on red blood cell number and size.
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Use this page for source review, not diagnosis, treatment, medication changes, or emergency triage.