Glossary
Fertility testing terms, explained.
Lab reports use precise clinical language for good reason - but it isn't always language you use every day. Here's what the terms on your Fertility Signal report actually mean, in plain English.
The five signals
Count
Sperm concentration
The number of sperm present in each millilitre of semen. Low count doesn't mean conception is impossible - it means the odds per cycle are lower, which is where a protocol or clinical support can help.
Motility
Movement quality
How well sperm move. Sperm need to swim effectively to reach and fertilise an egg, so motility is scored separately from count - you can have a high count with low motility, or vice versa.
Morphology
Shape & structure
The size and shape of individual sperm, assessed under a microscope. Sperm with an unusual shape may have a harder time reaching or fertilising an egg.
DNA fragmentation
Also shown on your dashboard as "DNA Integrity"
A measure of breaks or damage in the genetic material carried by sperm. A standard semen analysis can look normal while DNA fragmentation is still elevated, which is why it's tested separately - it's a common contributor to otherwise unexplained infertility.
WHO reference values
Comparison ranges
Standard ranges published by the World Health Organization, used across fertility labs worldwide to judge whether a semen result falls within a typical fertile range. Your report benchmarks against these values.
Hormones
Hormones (overview)
Endocrine profile
Sperm production is controlled by a chain of hormones produced in the brain and testes. Testing this chain helps identify whether a low score is being driven by hormone imbalance rather than the reproductive tissue itself - which often changes the treatment approach.
Testosterone
The primary male sex hormone. It supports sperm production, libido, and general reproductive health. Both low and unusually high levels can affect fertility.
FSH
Follicle-Stimulating Hormone
Produced by the pituitary gland, FSH signals the testes to produce sperm. Elevated FSH can indicate the testes aren't responding as expected.
LH
Luteinizing Hormone
Works alongside FSH to trigger testosterone production in the testes.
Prolactin
A hormone that, at elevated levels, can suppress testosterone and interfere with sperm production. Elevated prolactin is one of the more treatable causes of a low score.
Oestradiol
A form of oestrogen present in men in small, normal amounts. An imbalance between oestradiol and testosterone can affect sperm quality.
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