| http://www.w3.org/ns/prov#value | - The biological analyte may an endogenous substance such as a protein (e.g., human chorionic gonadotropin) or a hormone (e.g., luteinizing hormone), or an exogenous substance such as a drug or drug metabolite (e.g., cocaine or other drugs of abuse and/or their metabolites) or a bacterial antigen (e.g., Streptococcus), or a combination.
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