Population
13 lyophilized plasmas and 5 deep-frozen pooled plasmas from coumarin-treated patients
Design
Other
Authors
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May warrant preferring deep-frozen over certain lyophilized plasmas for PT calibration; leaves open optimal calibrant standardization.
Different types of lyophilized plasmas show varying degrees of interlaboratory variation in INR assignment, which must be considered when selecting calibrants for local PT system calibration.
Houbouyan‐Reveillard et al. (1999) studied this question.
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