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Biological aging
Telomere length
Research-stage biomarkerGenomicBlood/cellsassay-specific
A measure of terminal chromosome repeat length.
What it measures
Average or cell-specific telomere length.
Why it matters
Telomeres shorten with cell division and age and have been studied extensively as aging markers.
How to interpret it
Interpret by assay, tissue/cell type and population distribution.
Important limitations
High biological and measurement variability limits individual-level aging interpretation.
Evidence status
Research-stage biomarker
Biologically relevant but limited as a stand-alone personal biological-age test.
Research & guidance
Original papers, validation studies, reviews and clinical guidance connected to this measurement.
For education and evidence exploration, not diagnosis or individualized medical advice.