Wallach's Interpretation of Diagnostic Tests: Pathways to Arriving at a Clinical Diagnosis (1141 page)

BOOK: Wallach's Interpretation of Diagnostic Tests: Pathways to Arriving at a Clinical Diagnosis
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   Laboratory artifacts
   Hemolysis during venipuncture, conditions associated with thrombocytosis or leukocytosis, incomplete separation of serum and clot, double spinning (respinning) of blood collection tubes
   Arm in upward position while collecting blood
   Betadine application
   Laboratory order of draw (lavender top tubes drawn before serum chemistry tubes)
   Drawing above IV site
   Vigorously mixed tubes
   Collection techniques
   Traumatic draw
   Pneumatic tube system issues: speed too high, unpadded canisters, excessive agitation
   Delay in processing
   Centrifuging at too high G force
   Increased heat exposure in centrifuge

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