A male ejaculate volume of 2-6ml at a time is considered normal.
The normal range of male ejaculate volume is 2-6ml, if the ejaculate volume is <2ml, it is called low semen volume. Low semen volume is most often seen in obstruction of the ejaculatory ducts, especially incomplete obstruction, but also in excessive sexual frequency, incomplete collection of semen, dysfunction of the accessory gonads, low androgen secretion by the testes, and most commonly and dangerously, in the development of the seminal vesicles and the hypoplasia of the vas deferens.
Excessive semen volume, i.e. more than 6 ml, if it reaches 7-8 ml, is seen as an alkaline semen pH, which can reach a pH of 8.0 or more, most often seen in prostatitis. If there is a longer period of abstinence, say more than 1-2 weeks or more, then the volume of semen may increase accordingly.
Polysemenorrhea is commonly caused by inflammation of the seminal vesicles or by excessive secretion of gonadotropins by the pituitary gland, and inflammation of the seminal vesicles is more common in young adults. Excessive ejaculate volume can also reduce the chances of conception, and in some cases can interfere with sperm movement and fertilization.
Either too much or too little ejaculate needs to be seen in a hospital and treated accordingly.