Healthy young males (N = 6) ingested either 2 mg/kg of
androstenedione (andro) or a placebo on two separate occasions. Blood
samples were taken before, and at 20, 40, and 60 minutes after, ingestion.
Blood levels of andro were elevated within 20 minutes but there were no
significant elevations of free testosterone or estradiol. Values for the latter two measures were rising and could possibly reach significant levels over a longer period than that evaluated in this study.
Implication. The ingestion of
androstenedione causes a quick rise in andro concentrations in the blood.