Predictive accuracy and sources of variabil... [Ann Clin Biochem. 2009] - PubMed - NCBI - 0 views
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Nathan Goodyear on 11 Jun 13Study finds variations in calculated free testosterone. Most of the variability is from the total testosterone, lesser due to the formulas, and third to the SHBG assay. The point here, is there are too many variables to place a lot of weight on calculated free T in serum. Jus test it in the saliva.