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Article: Low pH control.(Answering your questions)
- Article from:
- Medical Laboratory Observer
- Article date:
- November 1, 2004
- Author:
CopyrightCOPYRIGHT 2004 Nelson Publishing. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Q I am having a difficult time answering several questions on the CAP checklist for blood gases. At our hospital, it is not uncommon to have pHs in the 6.6 or 6.7 range. The blood-gas instrument has a measuring range of 6.3 to 8.0. I cannot find any kind of control material that can test that range. Most commercially prepared material does not go lower than 6.8. I can report
A The first issue concerns the reporting of blood-gas results that are in compliance with CAP question BGL.29770. This requirement asks: "Do the control materials cover the analytical measurement range of the analyzer?" Many laboratorians interpret this as a requirement for the use of quality-control ...