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Virus, Direct Detection DFA, Respiratory Syncytial Virus (RSV)
CPT:
87280
Synonyms
- Respiratory Syncytial Virus, Direct Detection by DFA
Test Includes
Direct microscopic examination (nonculture) of virus-infected cells. Quality of specimen may be evaluated.
Special Instructions
Submit one specimen per test requested. Specify the exact specimen source/origin (eg, nasopharynx). Indicate a specific test number on the request form.
Expected Turnaround Time
1 - 4 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Related Information
Related Documents
Specimen Requirements
Specimen
Impression smears of tissues, lesion scrapings and swabs, upper respiratory tract swabs
Volume
Two slides per virus
Container
Plain glass slide, no fixative
Collection
Submit two thinly made air-dried slides. Do not use spray fixative.
Storage Instructions
Refrigerate or maintain specimen at room temperature.
Causes for Rejection
Specimen received after prolonged delay in transport (usually more than 72 hours); unlabeled specimen or name discrepancy between specimen and request label; broken or badly scratched slides; fixative used on slides; bacterial swab transport
Test Details
Use
Rapid diagnosis of RSV
Methodology
Direct fluorescent antibody (DFA)
Reference Interval
No virus detected
Additional Information
Generally, this test is not as sensitive as cell culture.
References
Drew WL. Controversies in viral diagnosis. Rev Infect Dis. 1986 Sep-Oct; 8(5):814-824 (review). 3024292
Drew WL. Diagnostic virology. Clin Lab Med. 1987 Dec; 7(4):721-740 (review). 3319366
Smith TF. Rapid methods for the diagnosis of viral infections. Lab Med. 1987; 18:16-20.
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 185017 | Virus, RSV Ag, DFA | 5877-6 | 185017 | Virus, RSV Ag, DFA | 5877-6 |
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