According to a research published ahead of print in the British Journal of Sports Medicine, present steroid (testosterone) doping tests must be scrapped for International Sports as they tend to ignore ethic differences in hormone activity.

It is believed that testosterone and other hormones that propel testosterone levels, such as GH (growth hormone), are some of the most widely abused performance enhancing drugs in sport.

From News-Medical.Net:

They included 57 men of Black African origin; 32 of Asian origin; 32 of Hispanic origin; and 50 of white (Caucasian) origin in their research. All the men were aged between 18 and 36.

The results revealed the genetic variation in almost one in four (22%) of the African footballers; in eight out 10 (81%) of the Asian players; one in 10 of the white men, and in 7% of the Hispanic players.

Based on these findings, the Swiss researchers “recalibrated” the thresholds for each ethnic group.

The new T:E ratios were: 5.6 for men of African origin; 5.7 for white men, and 5.8 for men of Hispanic origin. For men of Asian origin, the ratio was 3.8.

A single indiscriminate threshold to pick up steroid abuse in international sport is “not fit for purpose,” the authors conclude. Instead, the reference ranges should be tailored to an athlete’s individual endocrinological (hormonal) passport, they suggest.

“[Such a] passport may detect modifications induced by abuse of testosterone and its precursors, but also alterations in the steroid profile caused by indirect androgen doping products,” they conclude.

The involved researchers conducted test on steroid profiles of football players of varying ethnicities after deliberately adding steroids to their urine samples.