Important Information for Users The Centers for Disease Control and Prevention (CDC) periodically refines these laboratory methods. It is the responsibility of the user to contact the person listed on the title page of each write-up before using the analytical method to find out whether any changes have been made and what revisions, if any, have been incorporated. Cotinine in Serum NHANES 2003–2004 Public Release Data Set Information This document details the Lab Protocol for NHANES 2003–2004 data. A tabular list of the released analytes follows: Lab Number Analyte SAS Label l06_c LBXCO
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