Elevated CA125 in a patient's blood may indicate ovarian cancer. However, routine screening of CA125 levels is not practical due to which of the following reasons?
A) CA125 levels vary among individuals.
B) CA 125 levels cannot be detected during certain portions of the menstrual cycle.
C) Only ovaries secrete CA125.
D) CA125 levels are elevated only at the beginning of cancer development and then cease abruptly.
Correct Answer:
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