Range Atlas is AI-collected and not medically reviewed. It is for informational purposes only, meant to help curious people start a conversation with a healthcare professional. The chart shows how sources disagree, not whether a value is good or bad for you. Color shows what each source's region means, not a recommendation.
ng/dL · 6 sources · 1 countries · spread 135.0x
Total testosterone in ng/dL. Male and female ranges differ enormously, so this axis is scaled to the male range and the female band appears small. Labs disagree on the male lower limit (240 to 300) and ARUP shows an age-related decline.
Unit rule: normalize to common United States display units. Mayo is the tiebreaker, then Quest, then Labcorp. Fixture: 17 markers, 101 rows, 70 source names, 11 conversion rules.
visualShape is stored geometry (band, floor, ceiling, point). regionMeaning is stored polarity (reference, optimal, concern_low, concern_high). Neither is inferred from labels at render time.
No marker-specific conversion rule is needed for this selected fixture row set.