Ask a doctor on the topic of Internal medicine

M2-PK

April 2, 2015 | 20,00 EUR | answered by Dr. David Meyer

Hello,

According to the laboratory results of a stool examination, I have a M2-PK of 4.97 U/g with suspected gastrointestinal neoplasia. Is the value of 4.97 concerning? Of course, I have an endoscopy scheduled.

Dr. David Meyer

Dear questioner,

This test is controversial in the medical field. Even with elevated values, it is not a sure sign of colorectal cancer. Since you are already planning an endoscopy, you don't need to worry about this value even more. Depending on the test kit, a cutoff value of 4 is considered positive, but the significance of this only slightly elevated value is not very high.
The gold standard for diagnosis is endoscopy. Was the fecal occult blood test positive?

Best regards,
Dr. Meyer