Minimum sperm count for normal semen analysis according to WHO:
**Core Concept**
The World Health Organization (WHO) provides reference values for semen analysis to assess male fertility. These values include sperm count, motility, and morphology.
**Why the Correct Answer is Right**
The WHO reference value for a normal semen analysis includes a minimum sperm count of 15 million per milliliter. This value indicates the lower threshold for a normal sperm concentration.
**Why Each Wrong Option is Incorrect**
**Option A:** Lower than the WHO reference value, indicating potential male infertility.
**Option B:** Lower than the WHO reference value, indicating potential male infertility.
**Option D:** Higher than the minimum required for a normal semen analysis.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that a single semen analysis with low sperm count does not necessarily indicate infertility, as there can be variability between samples.
**Correct Answer:** C. 15 million per milliliter