Chr.A

What does "Chr.A" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.

Explanation

"Chr.A" is a shorthand term used in medical documents to refer to Chromogranin A. This is a protein that is often found in certain types of cells related to the nervous system and hormone production. In the context of a medical test, if Chr.A is mentioned as negative, it means that this particular protein was not detected in the sample tested.

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