What are the criteria when choosing between IUI/IVF based on sperm analysis?

The following criterion used to opt between IUI and IVF based on sperm analysis by the embryologists/gynecologists of Kiran Infertility Centre – Chennai such as –

  • Concentration or sperm count

The common value of sperm concentration is 15 million sperm per mL or higher.

The closer you get to this number, the better your chance with IUI. Those couples having less than a million sperms the chances of conceiving are lower with IUI and the right choice is to go for IVF.

  • Sperm movement or motility

The sperm movement is also important to determine the success rate of IUI. Enough motile sperm may help in improving chances of pregnancy. The most commonly used cutoff for normal sperm motility is greater than or equal to 50%. For men with otherwise normal semen parameters, but motility in the 30% to 40% range, IUI might be successful in achieving pregnancy. IVF with ICSI is an option for those couples/men who have less than 35% range of motility.

  • Morphology of sperm

Sperm morphology ranges indicate what percent of sperm are considered normal in size and shape. These sperm are the most likely to be able to fertilize an egg. Sperm morphology affects fertility because sperm have to be a certain shape to be able to penetrate an egg. IVF may be the option in case of head defect or mid piece defects in sperm.


  • Source of sperm

The source of sperm retrieved such as directly obtained from testicles or epididymis is also one of the factors to be considered while going for IVF or IUI treatment.

  • Other female factors

Female factors such as blocked fallopian tubes, endometriosis, and active infections may determine in choosing IUI and or IVF by the doctors as option for infertility treatment.

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