WHO guidelines for minimal sperm count is:September 2007
**Core Concept**
The World Health Organization (WHO) guidelines for minimal sperm count are established to assess male fertility and distinguish between normal and abnormal semen parameters. These guidelines are crucial for diagnosing male infertility and guiding treatment options.
**Why the Correct Answer is Right**
In 2007, the WHO updated its guidelines for semen analysis, and the new reference values were established based on a large dataset of fertile men. The guidelines recommended a minimal sperm count of 15 million sperm per milliliter (mL) of semen, with at least 32% of sperm showing normal morphology and 32% showing normal motility. This update provided a more accurate and reliable standard for evaluating male fertility.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not reflect the updated guidelines. The previous WHO guidelines recommended a lower minimal sperm count, but the new guidelines are more stringent to accurately reflect normal fertility.
**Option B:** This option is incorrect because it is too low. A minimal sperm count of 5 million/mL would be considered low and potentially indicative of male infertility.
**Option C:** This option is incorrect because it is too high. A minimal sperm count of 50 million/mL is not a realistic or recommended threshold for normal fertility.
**Clinical Pearl / High-Yield Fact**
The WHO guidelines for semen analysis are updated periodically to reflect advances in reproductive medicine and improve diagnostic accuracy. It is essential to stay up-to-date with the latest guidelines to provide accurate diagnoses and effective treatment for male infertility.
**Correct Answer: D. 20 million**