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. Author manuscript; available in PMC: 2023 Jul 25.
Published in final edited form as: J Urol. 2012 Feb 15;187(4):1369–1373. doi: 10.1016/j.juro.2011.11.095

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Of men with low serum TT 61.7% had normal serum cFT but only 2.1% with normal TT had low cFT. Only 38.3% of men with low serum TT had low cFT but 97.9% with normal TT had normal cFT. T, testosterone.