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Test Code CMVPV Cytomegalovirus (CMV) Molecular Detection, PCR, Varies


Ordering Guidance


For plasma specimens order CMVQN / Cytomegalovirus (CMV) DNA Detection and Quantification by Real-Time PCR, Plasma.

 

For lower respiratory specimens, order CMVLR / Cytomegalovirus (CMV) Molecular Detection, PCR, Lower Respiratory.



Necessary Information


1. Specimen source is required.

2. Source information must include main anatomical site of collection.



Specimen Required


Submit only 1 of the following specimens:

 

Specimen Type: Body fluid

Sources: Spinal, pleural, peritoneal, ascites, pericardial, amniotic, or ocular

Container/Tube:

Preferred: Sterile, screwcap, 5-mL aliquot tube

Acceptable: Sterile container

Specimen Volume: 0.5 mL

Collection Instructions: Do not centrifuge.

 

Specimen Type: Upper respiratory tract fluid

Sources: Nasopharyngeal aspirate or washing

Container/Tube:

Preferred: Sterile, screwcap, 5-mL aliquot tube

Acceptable: Sterile container

Specimen Volume: 1.5 mL

Collection Instructions: Do not centrifuge.

 

Specimen Type: Swab

Sources: Dermal, eye, nasal, saliva, throat, or genital

Supplies:

-Culturette (BBL Culture Swab) (T092)

-M4-RT (T605)

Container/Tube: Multimicrobe media (M4-RT, M4, M5, Bartels, or Jiangsu) and ESwab or Culturette

Collection Instructions: Place swab back into multimicrobe media. 

 

Specimen Type: Tissue

Sources: Brain, colon, kidney, liver, lung, etc.

Supplies: M4-RT (T605)

Container/Tube: Sterile container containing 1 mL to 2 mL of sterile saline or multimicrobe medium (M4-RT, M4, M5, Bartels, or Jiangsu)

Specimen Volume: Entire collection

Collection Instructions: Submit only fresh tissue. 

 

Specimen Type: Urine

Container/Tube: Sterile container

Specimen Volume: 1 mL

Collection Instructions: Collect a random urine specimen.

 

Specimen Type: Bone marrow

Container/Tube: Lavender top (EDTA)

Specimen Volume: 0.5 mL

Collection Instructions: Send bone marrow in original tube. Do not aliquot.

 


Useful For

Rapid qualitative detection of cytomegalovirus (CMV) DNA

 

This test is not intended for the monitoring of CMV disease progression.

Method Name

Real-Time Polymerase Chain Reaction (PCR)/DNA Probe Hybridization

Reporting Name

Cytomegalovirus, PCR

Specimen Type

Varies

Specimen Minimum Volume

Ocular Fluid, Spinal Fluid, or Urine: 0.3 mL; Body Fluid (pleural, peritoneal, ascites, pericardial): See Specimen Required; Upper respiratory tract specimens: (Nasopharyngeal aspirate or washing): 1 mL; Tissue: 2 × 2-mm biopsy

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Refrigerated (preferred) 7 days
  Frozen  7 days

Reject Due To

Calcium alginate-tipped swab
Wood swab
Transport swab containing gel
Dry/flocked ESwab
Feces
Paraffin blocks
Breast milk
Heat-inactivated specimens		 Reject

Clinical Information

Infection with cytomegalovirus (CMV) is a significant cause of morbidity and mortality in transplant recipients and other immunocompromised hosts. Specific neurologic syndromes associated with CMV infection include subacute radiculomyelopathy, peripheral neuropathy, and encephalitis.

 

Cytomegalovirus-associated central nervous system disease occurs most commonly in immunocompromised patients. Histologic evidence of CMV infections in autopsy brain tissue was identified in 20% to 40% of patients with AIDS. In 2 separate studies, CMV (DNA) was the most common herpesvirus (29/181, 16/49) detected from the cerebrospinal fluid of patients with AIDS. 

 

Central nervous system infections with CMV can also occur in immunocompetent patients, and infection can result in a mono-like illness. A significant percentage of adults are positive for IgG antibodies against CMV, suggesting prior infection with the virus.

Reference Values

Negative

 

Reference values apply to all ages.

Interpretation

Detection of cytomegalovirus (CMV) DNA in a specimen supports the clinical diagnosis of infection due to this virus.

 

Studies indicate that CMV DNA is not detected by polymerase chain reaction in cerebrospinal fluid from patients without central nervous system disease caused by this virus.

Day(s) Performed

Monday through Sunday

Report Available

Same day/1 to 4 days

Specimen Retention Time

7 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

87496

LOINC Code Information

Test ID Test Order Name Order LOINC Value
CMVPV Cytomegalovirus, PCR 5000-5

 

Result ID Test Result Name Result LOINC Value
CMVPS Specimen Source 31208-2
618969 Cytomegalovirus PCR 5000-5

Forms

If not ordering electronically, complete, print, and send a Microbiology Test Request (T244) with the specimen.