Can a lab TA write me a letter of rec?

Hey everyone! I am planning to apply this coming cycle and am in the process of finalizing my letters of recommendation. Would dental schools look negatively upon a letter written by my physiology lab TA? She was the one that was the primary instructor and I did not see the professor once. I recognize that most schools prefer a faculty name but the professor does not co-sign letters unless he knows the student (i.e. from a different class). She is currently a grad student who has also... Can a lab TA write me a letter of rec?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums