Diagnostic Test Directory

Virology Laboratory

Mumps virus PCR - urine specimen

  • Synonyms: Mumps Virus RNA Amplification, Mumps Virus Real-Time PCR
  • LIS Mnemonic: MUMPSPCR

    Collect

    Random Urine Container. Buccal/throat swabs and blood specimens should also be routinely collected and submitted for testing to enhance the likelihood of detecting mumps virus RNA by real-time PCR. F

    Volume Required

    5-10 ml of clean voided urine; for infants, 1-2 ml is acceptable

    Minimum Required

    5 ml of clean voided urine; for infants, 1 ml is acceptable

    Transport

    Keep specimen at 4C

    Stability

    Labile. It is recommended that all specimens for molecular testing be stored at 4C immediately after collection and then promptly sent to the laboratory for appropriate processing and storage for tes

    Processing

    For delays of more than 24-48 hours (e.g., when shipping specimens from an outside facility), specimens should be processed as needed and rapidly frozen to -70C and then transported to the laboratory on dry ice.

    Unacceptable conditions

    Specimens for molecular testing should not be stored at room temperature or frozen at -20C.

    Specimen Handling

    Specimens should be transported to the laboratory as quickly as possible after collection. When imme

Days Performed

Daily

Reported

Same day

Reflex Testing

N/A

CPT

87798

Methodology

Amplification and detection of mumps virus RNA using real-time TaqMan PCR and nucleic acid primer/probe pairs specific for conserved regions of the mumps virus genome. This test is performed pursuant to an agreement with Roche Molecular Systems, Inc.

Disease Information

Clinical Features:

Following an incubation period of 14-18 days, mumps begins with a nonspecific prodrome of low-grade fever, headache, respiratory symptoms, malaise, and myalgia. Most common feature is swelling of salivary glands in 30-40%, particularly the parotid glands. Swelling is usually bilateral; unilateral in 25% of cases. Severe illness with complications more likely in adults. The virus is transmitted from person to person through respiratory secretions and is quite contagious. Greatest communicability is 1-2 days before to 5 days after onset of parotid gland swelling. Illness lasts a week to 10 days. Complications include orchitis in 20-30% of infected postpubescent males, oophoritis and mastitis in 5% of postpubertal females; sterility and impaired fertility are uncommon. Mumps can also be complicated by meningitis and encephalitis.

Utility:

Clinical diagnosis of mumps is unreliable; requires laboratory confirmation. Although once a common disease in children, fewer physicians now recognize the clinical features of mumps. Also, many viruses, including parainfluenza virus, enteroviruses, EBV, CMV, HIV, and influenza virus, can cause acute parotitis. Mumps virus PCR is most useful in detecting mumps virus RNA from buccal/throat swabs, urine, blood, and CSF (for meningitis/encephalitis) specimens to diagnose acute disease in unvaccinated or previously vaccinated individuals. Outbreaks of mumps still occur in the United States despite high coverage rates with vaccine. The disease is normally imported from abroad or associated with importation from other countries and outbreaks arise in people who have not been immunized and as a result of two-dose vaccine failure. Therefore, both unvaccinated and vaccinated persons are at risk for acquiring mumps themselves and transmitting the virus to others. Living in closed communities in crowded conditions is a contributing factor in the spread of the virus.

Interpretation

Detection of mumps virus RNA by PCR, mumps virus antigens by immunofluorescence, or growth of mumps virus in culture is diagnostic evidence for acute

Reference Values

Negative or no mumps virus RNA detected

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