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A Laboratory Test Result (LB) domain contains laboratory test data such as hematology, clinical chemistry and urinalysis. This domain does not include microbiology or pharmacokinetic 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 isually provided electronically.  

This section only discusses This example only include routine safety laboratory tests. MOre More infomraiton on  biomarkers typically tested in Tobacco studies are discussed in the setion on Biomarkers. 

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