Lainy.....Please, do not feel bad. Guidelines for current tissue samplings are still being established by the NCI. Therefore, even if you had preserved tissue a few years back most likely, it would not be useable at today's standards. The guidelines determine specific handling procedures for retrieving and handling of tissue, as contamination is one of the major problems occurring.
THIS INFORMATION IS NOT INTENDED NOR IMPLIED TO BE A SUBSTITUTE FOR PROFESSIONAL MEDICAL ADVICE. YOU SHOULD ALWAYS SEEK THE ADVICE OF YOUR PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROVIDER