Collections totaling 100 hairs or more in a given 24-hour period are indicative of ongoing telogen effluvium. If the collections are performed over several weeks while the telogen effluvium is resolving, the number of hairs collected each time should decrease.
Author: Elizabeth CW Hughes, MD, Dermatologist, Group Health Cooperative
Contributor Information and Disclosures.The above reference gave me a good insight from which I am quoting the reply to your query as given in the earlier post.