Home Glossary Letter P pre-analytical phase
pre-analytical phase
Medical term Processing
Steps before testing: ordering, patient preparation, identification, collection, labeling, handling and transport. Errors here cause about 60 to 70% of lab errors.
Related terms dead volume Extra sample an analyzer needs to pipet accurately, beyond the volume the test itself uses; part of a test's… icterus Dark yellow serum or plasma caused by high bilirubin; bilirubin in icteric samples can falsely lower some… lipemia Cloudy, milky serum or plasma from high blood fats, often after a heavy meal; it can interfere with tests… post-analytical phase Steps after testing: verifying and reporting results and getting them to the ordering provider and the… recollection Collecting a new specimen when the first was rejected or lost; contact the patient and document the reason. reference laboratory An outside laboratory to which specimens are referred for tests the collecting lab does not perform. specimen rejection A lab's refusal to test a specimen that fails its written acceptance criteria, for example unlabeled… tamper-evident seal Seal placed over a specimen bottle's cap and down its sides that shows if the bottle was opened; the… Study Processing
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