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Dear Mike, Probably you might want to exclude heterophilic antibody interference first, using HBT tubes of Scantibodies. Serial dilution might show non-linear dilution pattern indicating some form of interference. Kind regards, Bart Ballieux Dr.Ir. B.E.P.B. Ballieux Klinisch Chemicus Endocrinoloog CKCL, E2-P Leids Universitair Medisch Centrum Postbus 9600 2300 RC Leiden Tel: 071-5262165/2278 Fax: 071-5266753 email: [log in to unmask] ________________________________ From: Clinical biochemistry discussion list [mailto:[log in to unmask]] On Behalf Of Steiner, Michael Sent: dinsdag 14 februari 2012 18:41 To: [log in to unmask] Subject: CEA > 100 Dear colleagues, Would you think that a CEA > 100 ng/mL may be caused by a benign disorder ? If so, what should be thought of first ? Out of memory, I do not recall a single case where we came up with a "benign explanation" of CEA > 100 ng/mL ... Best regards, Mike Priv.-Doz. Dr. med. Michael Steiner Medizinisches Labor Rostock Suedring 81 D-18059 Rostock [log in to unmask] Priv.-Doz. Dr. med. Michael Steiner Arzt für Laboratoriumsmedizin Ärztlicher Leiter email: <[log in to unmask]> _______________________________ Medizinisches Labor Rostock Labormedizinisches Versorgungszentrum GbR Südring 81 D-18059 Rostock Medizinisches Labor Rostock | Südring 81 | D-18059 Rostock Tel: + 49 (381) 70 22 100 | Fax: + 49 (381) 70 22 109 | email: [log in to unmask] Diese E-Mail enthält vertrauliche und/oder rechtlich geschützte Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese Mail. Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser Mail ist nicht gestattet. This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is not allowed. ------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 Green Laboratories Work http://www.laboratorymedicine.nhs.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 Green Laboratories Work http://www.laboratorymedicine.nhs.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/