C199931Level 9
Influenza A H1 Nucleic Acid Measurement
**Semantic type:** Laboratory Procedure
**Definition:** The determination of the Influenza A virus subtype hemagglutinin (HA) 1 nucleic acid in an biological specimen.
**Synonyms:** - INFAH1NC - Influenza A H1 Nucleic Acid - Influenza A H1 Nucleic Acid
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