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John- Maybe I should use PTESTYP with the code list (RESTYPRS) SUBSTANCE CONCENTRATION", "PROPORTION", "MASS RATE", "ARBITRARY CONCENTRATION"
The following example illustrates how to represent results from HPHC testing of a tobacco product under study using the Product Testing (PT) domain. This testing is conduct on samples of the product of interest, and if applicable samples of comparison products. Each product tested would have it's own unique sponsor-defined value for SPTOBID to identify the product.
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