Pork liver can cause positive tests for nandrolone: researchers
Kelly Guest may have had it wrong when he blamed his positive steroid test on eating beef, but eating pork liver might get you kicked out of the Olympics, Portuguese scientists say.
- FROM AUG. 1, 2002: Beef not source of Guest's steroid: cattlemen
Researchers at the Portuguese National Laboratory of Veterinary Research found that the consumption of pork meat, specifically the liver of uncastrated males, can cause the concentration of nandrolone metabolites in the urine to exceed anti-doping limits by 10 to 100 times.
The limits for nandrolone metabolites in high-level amateur athletic competition are 2 nanograms per millilitre for men and 5 nanograms for women. The human body is known to produce about 10 per cent of that amount of nandrolone.
The researchers, Jorge Barbosa and Jos Alexandre Galo, said their results confirm an earlier study by Dutch researchers on high levels of nandrolone in liver pat used in sausages in Holland.
Their study was published in the Portuguese Journal of Veterinary Sciences.