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To study an episode of excessive sample hemolysis associated with a recently installed pneumatic tube system from the Accident and Emergency Department.Hemolysis rates in samples delivered with a tube system installed 3–4 months previously were followed up retrospectively and prospectively. The laboratory database was searched over a 3-year period for serum potassium results and the number of hemolyzed...
We studied the stability of 33 analytes related to clinical chemistry, bone, and vitamin metabolism, after storage in serum separator tubes (SST™).Blood was collected from 6 subjects using SST tubes. Some serum remained in the tube in contact with the barrier gel and was stored at −80 °C for 12 mo.Clinically significant changes occurred only in 1,25-dihydroxyvitamin D and retinol-binding protein.Freezing...
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