ARUP's Laboratory Test Directory
| 0060284: Influenza A & B DFA with Reflex to Influenza Culture |
| Test Mnemonic: FLUFAC | |
|
Methodology: Direct Fluorescent Antibody Stain
Performed: Sun-Sat Reported: 2-14 days |
| Specimen Required: | |
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Collect: Nasopharyngeal aspirate/swab/washing, tracheal aspirate, or bronchoalveolar lavage (BAL). Place each specimen in a separate, individually sealed bag. Source of specimen is preferred.
Transport: Bronchoalveolar lavage (BAL), nasopharyngeal washing/aspirate, or tracheal aspirate in sterile, leak-proof container or in viral transport media at 2-8°C. (Min: 1 mL) Nasopharyngeal swab, in viral transport media at 2-8°C. (Min: 1 mL) Place each specimen in a separate, individually sealed bag. Submit specimen according to Biological Substance, Category B, shipping guidelines. Pediatric Collection/Transport: Submit specimen according to Biological Substance, Category B, shipping guidelines. Remarks: Do not freeze. Unacceptable Conditions: Dry swabs, wood swabs, and calcium alginate swabs. Slides. Stability: Ambient: 1 hour; Refrigerated: 3 days; Frozen: Unacceptable |
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| Reference Interval: |
| Negative |
| Note: | |
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If DFA is negative or inadequate, then an influenza culture will be added. Sensitivity of DFA methodology is dependent upon adequacy of the specimen. If there are fewer than 20 cells, the DFA result will be reported as "sample inadequate." |
| CPT Code(s): | |
| 87276 Influenza A, FA; 87275 Influenza B, FA; if reflexed, add 87252 Tissue culture; 87253 Hemadsorption; 87254 Stain |