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Thank you for your enquiry. There is no stated expiration date for this antibody. There is one year expiration date from the date of purchase, however the Abpromise will be still effective for only 120 days after purchase. This antibody is unlikely to be be discontinued as the sales for the last two years have been consistent. I hope this information helps. Please do not hesitate to contact us if you need any more advice or information.
Answered on Nov 18 2009