LOINC long common name : Influenza virus A N2 RNA [Cycle Threshold #] in Specimen by NAA with probe detection;
LOINC short name : FLUAV N2 RNA Ct Spec Qn NAA probe;
LOINC description : The quantitative cross/cycle threshold (Ct) value may be reported for real-time PCR-based
assays. The value is defined by the number of PCR cycles required for the fluorescent
signal of a given product (targeted RNA) to cross the threshold (i.e. exceed background
level). In general, the lower the Ct value, the greater the amount of targeted nucleic
acid and vice versa. The interpretation (e.g. positive, negative, indeterminate) is
determined based on a cut-off value. The submitter's lab reports the interpretation
in OBX.8 segment and the specimen type in SPM.4 field of HL7 messaging.;