Important Announcement from USP Regarding Prednisone Tablets Reference Standard (Catalog #1559505 Lot R001B0)

From the Director of Standards Quality Assurance – United States Pharmacopeia (USP)… Recent evaluation of USP Prednisone Tablets Reference Standard, Catalog #1559505, Lot R001B0 by USP scientific staff has determined that Lot R001B0 is no longer suitable for its intended USP compendial use.  It has been assigned a new valid use date of July 6, 2015.

Please view the revised Certificate for Lot R001B0 within USP’s online store.  USP regrets issuing this notice after the valid use date has passed; please be assured that USP makes every effort not to do so.

A new lot is expected to be available no later than July 31, 2015.

For technical questions, please contact USP Reference Standard Technical Services at or by calling (301) 816-8129 or (800) 227-8772 extension 8129.

The above mentioned announcement is unfortunate however is out of Distek’s control.  We are closely monitoring the situation and doing our best to minimize any impact this has on our customers. The rescheduling of PVT services will commence as soon as the new lot becomes available. Any specific questions regarding your services should be directed to Distek’s support team at

We apologize for any inconvenience this may have caused and thank you for your patience and understanding.

Leave a comment

Filed under USP

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s