May I add, for those reading French: Ann Biol Clin 1994;52:625-37 Revol et al. This French expert group reports approx. 80% sensitivity for HVA, VMA and 95% if dopamine is added; with 5% non- or micro-secretors. Best regards, Raymond Wulkan Rotterdam-NL Met vriendelijke groeten, Dr.ir.R.W.Wulkan, clin. biochem. Dept. of Clinical Chemistry Medisch Centrum Rijnmond - Zuid; location Zuider Groene Hilledijk 315, 3075 EA Rotterdam Postbox 9100, 3007 AC Rotterdam Tel.nr. (010) 290.30.00 buzzer 111 Tel.nr. (010) 290.3501 (secr.) Fax.nr. (010) 290.38.18 ------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/