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Dear Mailbase I'd be interested to find out what cut-off other labs have for doing a direct ISE in lipaemic samples to avoid reporting falsely low sodiums, and whether this is based on the lipaemic index or triglyceride concentration. Previously we didn't have indices so relied on visual inspection and measured sodium by direct ISE for any samples that looked lipaemic. We now have indices set up on our new Roche analysers - the kit insert for ISEs states that there's no interference up to an L index of 2000 but notes that there's a poor correlation between the L index (measure of turbidity) and the triglyceride concentration. Thanks Vicky Victoria Clough Consultant Clinical Biochemist Barking, Havering and Redbridge University Hospitals NHS Trust ******************************************************************************************************************** This message may contain confidential information. If you are not the intended recipient please inform the sender that you have received the message in error before deleting it. Please do not disclose, copy or distribute information in this e-mail or take any action in relation to its contents. To do so is strictly prohibited and may be unlawful. Thank you for your co-operation. NHSmail is the secure email and directory service available for all NHS staff in England and Scotland. NHSmail is approved for exchanging patient data and other sensitive information with NHSmail and other accredited email services. For more information and to find out how you can switch, https://portal.nhs.net/help/joiningnhsmail ------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/