Final answer:
A Pap smear is the exam used to detect premalignant cells from cervical scrapings, with a cytotechnologist analyzing the stained cells for abnormalities.
Step-by-step explanation:
The exam used to detect premalignant cells in cervical scrapings is the Pap smear. A Pap smear is a critical medical test where a healthcare provider scrapes a small sample of cells from the uterine cervix, which are then sent to a laboratory. There, a professional known as a cytotechnologist applies stains to the cells and examines them under a microscope, looking for any abnormalities that may indicate the presence of cervical cancer or an infection such as HPV (human papillomavirus).