Dear Colleagues, I would be interested to hear from any labs using the ARK methotrexate assay as to which collection tube type they use for the assay, in particular, do any labs use gel separator tubes? Regards, Phil ___________________________________ Dr Phillip J Monaghan BSc MSc PhD Senior Clinical Scientist Department of Clinical Biochemistry The Christie Hospital NHS Foundation Trust Wilmslow Road Withington Manchester M20 4BX ------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/