Medical Laboratory Scientist (MLS) ASCP Practice Exam

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What is generally accepted as the lower threshold value for semen pH from fertile males?

7.2

The lower threshold value for semen pH that is generally accepted for fertile males is 7.2. Semen pH is a critical factor in male fertility and typically ranges from 7.2 to 8.0. A pH level at or above 7.2 is typically associated with normal seminal fluid, which indicates proper functioning of the prostate and seminal vesicles. Elevated acidity, as evidenced by a pH lower than this threshold, can suggest potential problems, such as infection or obstruction, which could negatively impact fertility.

Understanding the importance of semen pH can aid in diagnosing male reproductive issues and informs clinicians in the assessment of a male's fertility status. In this context, values below 7.2 or even 7.0 signal a more acidic environment, which is not ideal for sperm motility and viability. Therefore, a semen pH of 7.2 is a critical marker in evaluating male fertility.

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7.0

7.4

6.9

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