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A 37year old fit runner taking no extra protein/supplements/losalt/bananas/antacids (he is only on fluoxetine) has a persistently high potassium that is unexplained. Blood count normal (temporary high platelets on one occasion which returned to normal). GP wants to know why and is it OK for him to keep on marathon training? To settle the matter I asked the patient to attend the hospital for a fresh Li heparin sample (no other sample tubes) centrifuged promptly with no temperature change and prompt analysis. Plasma sodium 142 mmol/L 135 - 146 Plasma potassium * 5.2 mmol/L 3.2 - 5.1 * high Plasma chloride 105 mmol/L 96 - 108 Plasma bicarbonate * 31.4 mmol/L 22 - 29 * high Plasma creatinine 81 umol/L 62 - 106 Any suggestions - what gives a high bicarb and high potassium? regards Andrew Iversen This electronic message contains information from Brighton and Sussex University Hospitals NHS Trust, which may be privileged or confidential. The information is intended to be for the use of the individual(s) or entity named above. If you are not the intended recipient be aware that any disclosure, copying, distribution or use of the contents of this information is prohibited. If you have received this electronic message in error, please notify us immediately at [log in to unmask] This Trust is committed to openness and transparency, and this commitment is supported by the Freedom of Information Act 2000. Under the Act, any recorded information held by the Trust, including this message, unless legally exempt, may be subject to public disclosure. Activity and use of the Brighton and Sussex University Hospitals NHS Trust E-mail system is monitored to secure its effective operation and for other lawful business purposes. Communications using this system will also be monitored for viruses and other harmful material. ------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/