What are pap smear callbacks and how are they triggered?

Abnormal pap: Pap smear callbacks are generated by smears that are not normal cells.

Abnormal or insuff?: The most common reason for a patient to be called back is that the pap is abnormal or atypical. In this case either a colposcopy may be done or the pap may be repeated a few months later to see if it is still abnormal. Another reason to be called back is that there were insufficient cells in the sample and another one needs to be sent.