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The Laboratory Test Results (LB) domain is based on the Findings General Observation class. The LB domain is  is used to represent laboratory test data such as hematology, clinical chemistry and urinalysis. This domain does not include microbiology or pharmacokinetic concentration data, which are stored in separate domains. The laboratory data collected for trials is typically handled by two types of labs. Central Labs, and local labs. Local labs are usually captured directly on the case report form, while central lab data is usually provided electronically.  

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