"Morphology" refers to a measurement of how many of your sperm cells are shaped normally. Fellow uses a Computer-Assisted Semen Analysis (CASA) system to perform Fellow Semen Analysis (FSA) testing.

In order for the CASA system to report on morphology, it must detect a certain concentration of sperm cells that are "motile" (a technical way of saying moving around). That’s because the CASA system uses an FDA-cleared algorithm which correlates many different sperm cell metrics (including motility) to evaluate morphology.

What this means is that a "no result" morphology outcome is related to whether or not your sample has enough moving sperm cells to be analyzed. If you have a low sperm cell count or low motility, repeat testing won’t necessarily guarantee that you will get a morphology result.

FSA is designed primarily as a screening tool. We make it easy and comfortable to test so that we can increase access to male fertility care.

If you have low motility and a "no result" morphology and want to know more, you should consider visiting an in-person lab for either a WHO6 or a "Kruger Strict" morphology evaluation.