UW Hospital and Clinics Lab Test Directory
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Parainfluenza 1,2,3 Detection
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| Test Code(s): |
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PARPCR / HCPARPCR
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| CPT Code(s): |
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87631
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| Methodology: |
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PCR
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| Clinical Significance: |
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Detection of parainfluenza 1,2 and 3 in respiratory specimens.
Parainfluenza viruses (PIV) are secondary only to RSV in the morbidity caused by acute lower respiratory tract disease in infants and young children. There are four recognized types, types 1-3 being those causing most disease in humans. PIV1 and PIV2 are associated with autumn epidemics every other odd year and are the most common agents of croup. PIV3, which causes predominantly upper respiratory infection, occurs year round with a peak in late winter or spring. Illness from these viruses may recur throughout adult life and is a common cause for hospitalization of adults with chronic lung conditions such as asthma and COPD.
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| Days Performed: |
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See Additional Information.
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| Turnaround Time: |
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Stat: Not available stat.
Routine: 1 - 3 days.
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Specimen Requirements
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| Specimen: |
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Nasopharyngeal Minitip swab (flocked swab), BAL
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| Collection Instructions: |
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Available only as an add on test to Influenza A and B and/or RSV by PCR negative specimens.
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| Collection Container: |
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Preferred: UTM(Universal Transport Medium)
Also Acceptable:
Refrigerated M4 Transport Medium
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| Collection Volume: |
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Preferred: 2 mL
Pediatrics: 0.5 mL
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| Volume Required: |
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Preferred: 2 mL
Pediatrics: 0.5 mL
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| Specimen Transport: |
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Transport specimen to UWHC Microbiology Laboratory (B4/231)on coolant pack.
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| Unacceptable Criteria: |
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Swabs other than nasopharyngeal flocked swabs are not acceptable.
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| Stability: |
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Ambient: 2 hours
Refrigerated: 3 days
Frozen: Not acceptable
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Interpretation
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Expected Results:
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Negative
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| Test Limitations: |
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Proper collection and transport of specimen is of critical importance in direct detection.
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| Additional Information: |
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Positive results on inpatients, including those from ED who are subsequently admitted, will be called to the ordering source. Specimens should not be submitted for test of cure.
During peak respiratory virus season, test will be performed daily. During off-season test is performed less frequently, varying from 2-3 times per week.
This test was performed using a modification of an FDA approved method. The performance characteristics of this test were determined by the UWHC Clinical Laboratories and meet the standards for clinical testing.
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respiratory
virus
viral
influenza
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