Dr. Giorgio Cattoretti
Associate Professor of Clinical Pathology
Institute for Cancer Genetics, Columbia University
New York, USA

How stable are the diluted antibodies?

Answer:

Antibodies diluted as directed are very stable. Months and probably years. One study has sown extended shelf life for commercial reagents, beyond the manufacturer's expiration date. For antibodies used very diluted against low level antigens (<2K molecules/cell) is probably safer make fresh solutions monthly.