What does cytology show

What is the most common test done in cytology?

Cytology tests for cancer
A Pap smear, which collects cells from the cervix, is one example.
Removing spinal fluid by a lumbar puncture can provide cells for a cytology test.
A cytology test is different from a biopsy.
During a biopsy, tissue from a certain area of the body is removed and analyzed for cancer..