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Hi, UK NEQAS needs to add a note of caution. As for many complex substances, the units conversion factor is method-specific. Tim's factor of 1.21 is correct for most methods but there are some exceptions. For example, the factor for BRAHMS Kryptor AFP is one (that is, ng/mL = kU/L). If in doubt, check with the manufacturer of your method, Andy Ellis UK NEQAS for Peptide Hormones Combined Laboratories Royal Infirmary Edinburgh EH16 4SA UK Tel : +44 (0)131 242 6848 Fax : +44 (0)131 242 6882 _____ From: Clinical biochemistry discussion list [mailto:[log in to unmask]] On Behalf Of Hogan, Tim Sent: 11 April 2006 13:54 To: [log in to unmask] Subject: AFP units Almost instant reply, thanks to the wonders of the mailbase and John Martin. For anyone else interested for AFP 1KU/L = 1U/ml = 1.21ng/ml Tim Hogan Basildon **************************************************************************** **** The information contained in this email may be subject to public disclosure under the Freedom of Information Act 2000. Unless the information is legally exempt from disclosure, the confidentiality of this email, and your reply, cannot be guaranteed. It is intended solely for the addressee. Please notify the sender immediately if you are not the intended recipient. Access to this email by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful.Any views expressed in this email are those of the individual, and may not represent the views of Basildon and Thurrock University Hospitals NHS Foundation Trust. The presence of this disclaimer indicates that the email has been virus scanned. Although this email and any attachments are believed to be free of any virus, or any other defect which might affect any computer or IT system on which they are received and opened, it is the responsibility of the recipient to ensure that they are virus free. Basildon and Thurrock University Hospitals NHS Foundation Trust accepts no responsibility for any loss or damage arising in anyway from receipt or use thereof. If you received this in error, please contact the sender and delete the material from any computer. **************************************************************************** **** ------ACB discussion List Information-------- This is an open discussion list for the academic and clinical community working in clinical biochemistry. Please note, archived messages are public and can be viewed via the internet. Views expressed are those of the individual and they are responsible for all message content. ACB Web Site http://www.acb.org.uk List Archives http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html List Instructions (How to leave etc.) http://www.jiscmail.ac.uk/ ------ACB discussion List Information-------- This is an open discussion list for the academic and clinical community working in clinical biochemistry. Please note, archived messages are public and can be viewed via the internet. Views expressed are those of the individual and they are responsible for all message content. ACB Web Site http://www.acb.org.uk List Archives http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html List Instructions (How to leave etc.) http://www.jiscmail.ac.uk/