part of part of has part has part has_part characteristic of has modifier testosterone abnormal circulating testosterone level abnormal circulating level of testosterone MPheno.ontology MP:0005180 anomaly in the blood concentration of a potent androgen that promotes development of male secondary sex characteristics and the development of spermatozoa and may regulate sexual desire and help maintain bone and muscle health in both males and females abnormal circulating androgen level abnormal testosterone level amount abnormal blood