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• Correction Factors for Estimating Potassium Concentrations in Samples With In Vitro Hemolysis: A Detriment to Patient Safety 

  Context.-Correction factors have been proposed for estimating true potassium concentrations in blood samples with evidence of in vitro hemolysis. ...

  Archives of Pathology & Laboratory Medicine, 06/01/09 by Mansour, Mai M H; Azzazy, Hassan M E; Kazmierczak, Steven C · More from publication

• Answering your questions; low B12 determination 

  Q I have a physician telling me that all our B12 determinations are low. The low B12 result does not agree with the clinical picture. What are some...

  Medical Laboratory Observer, 12/01/06 by Steven C. Kazmierczak · More from publication

• High CK in asymptomatic woman 

  Q A 79-year-old female out-patient has a repeatedly high total CK (900 +/-; reference <215 U/L). Her clinician obtained an ALD (aldolase), which...

  Medical Laboratory Observer, 06/01/05 by Steven C. Kazmierczak · More from publication

• Pipette QC 

  Q I am in a doctor's office lab. I need to do my MLA pipette QC. What is the easiest way to go about verification for my MLA pipettes? I used to do...

  Medical Laboratory Observer, 04/01/05 by Steven C. Kazmierczak · More from publication

• Glycolysis and specimen storage 

  Q Our laboratory frequently performs chemistry tests on specimens collected on a mobile basis. These specimens may not be centrifuged for several...

  Medical Laboratory Observer, 04/01/05 by Steven C. Kazmierczak · More from publication

• High iron saturation, normal ferritin 

  Q What would cause a woman to have 100% iron saturation with a low normal ferritin? She was diagnosed with hemachromatosis 10 to 15 years ago and...

  Medical Laboratory Observer, 01/01/05 by Steven C. Kazmierczak · More from publication

• C-reactive protein as a cardiac test 

  Q What is the current role of high-sensitivity C-reactive protein in cardiac testing in the laboratory? Is it routinely used? How is it used with...

  Medical Laboratory Observer, 12/01/04 by Steven C. Kazmierczak · More from publication

• Low pH control 

  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...

  Medical Laboratory Observer, 11/01/04 by Steven C. Kazmierczak · More from publication

• Test validation 

  I have been a tech for 32 years, am of above-average intelligence, and I still do not understand CLIA's latest requirement for test validation. I...

  Medical Laboratory Observer, 06/01/04 by Steven C. Kazmierczak · More from publication

• Liquid calibrators for instrument 

  Q Olympus has recently changed its calibrator configuration to a lypholized material that is not stable enough to fit our situation. We are a small...

  Medical Laboratory Observer, 04/01/04 by Steven C. Kazmierczak · More from publication