Analysis of Ingredients of Supplements in the National Institutes of Health Supplement Database Marketed as Containing a Novel Alternative to Anabolic Steroids

Abstract

for their chemical contents (excluding expedients, minerals, and plant species) according to previously described methods (eAppendix in the Supplement). 5 Quantities were considered accurately labeled if they were within 20% of the labeled quantity. Data analysis was conducted with Excel 2016 (Microsoft Corp). The statistical prerequisite established was the determination of goodness of fit (ie, R 2 0.95) to conclude that linear calibration lines were fit for estimation purposes within the chosen concentration interval.