What is the requirement for quality control on sedimentation rates?
In standardizing hematology procedures across our laboratory network, we have discovered a variety of ways that labs are performing QC on ESRs. Some are purchasing controls and run a normal and abnormal control every shift (and spending $4,000 per year). I think that is a little overboard, especially considering they never reject a run because it is “out of control.” Other labs have developed various methods, such as having two technologists perform the test on the same sample periodically, to ensure control. We document the room temperature and that the plate is level. All of our labs are participating in CAP proficiency testing, but I don’t necessarily feel that since QC material is now available for ESR you have to purchase and run it. This is a test we’d like to offer at more of our clinic locations, but purchasing QC material would drive up the cost and probably force us to migrate the testing to the core labs. Our labs are using various methods with ESRs, so perhaps we need to lo
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