Follow up in a patient of H mole is done by:

The chances of persistent trophoblastic disease and choriocarcinoma are high after evacuation of H. mole therefore regular follow-up is mandatory. “After molar evacuation, patients should be monitored with weekly determinations of β-subunit hCG levels until these levels are normal for 3 consecutive weeks, followed by monthly determinations until the levels are nomrmal for 6 consecutive months. The average time to achieve the first normal hCG level after evacuation is about 9 weeks. At the completion of follow-up, pregnancy may be undertaken. After a patient achieves a nondetectable hCG level, the risk of developing tumour relapse is very low and may approach zero.” Novak 14/e, p 1590