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Relationship of total and bioavailable testosterone levels with hemoglobin level in all InCHIANTI19 participants and restricted to those with normal serum iron levels and no deficiencies of iron, cyanocobalamin (vitamin B12), or folate. Hemoglobin values are age adjusted. The relationships are summarized using locally weighted regression smoothers. To convert testosterone to nanomoles per liter, multiply by 0.0347.
