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Insights on Testosterone Testing

Dec 31, 2014

Overall, 3.2% of the men had their testosterone levels checked during this time period. However, the rate of testing increased over the four years, however from 2.5% at the start of the study to 3.6% by the end.

Men were more likely to be tested if they had other conditions related to low testosterone, such as low libido, diabetes, erectile dysfunction, infertility, osteoporosis, depression, prostate cancer, high blood pressure, chronic obstructive pulmonary disease (COPD), or an enlarged prostate.

The researchers also looked at the time of day the men were tested. Men’s testosterone levels fluctuate during the day and usually peak in the morning. Typically, testing guidelines provided by professional societies recommend early morning testing for consistency. But in the group of tested men, only about 9% were tested between 7 a.m. and 12 noon.

This low rate might be explained by clinician preference and scheduling conflicts. Also, levels tend to fluctuate less in older men, so it’s possible that their doctors didn’t feel it was necessary to test in the early morning.


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