EBV PCR, Quant, Whole Blood

This test is intended to be used for the quantitative detection of Epstein-Barr virus (EBV) DNA and as an aid in the diagnosis and management of EBV infections.

→ This test is only used as an aid in monitoring EBV-related disease.

→ It is not appropriate for the diagnosis of mononucleosis; order serological testing Epstein-Barr Viral Ab Panel instead.

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Reference Range:

EBV Qualitative: Not Detected

EBV Quantitative: <500 IU/mL

Log EBV: <2.7 log(10) IU/mL

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This test uses the polymerase chain reaction to amplify regions of the Epstein Barr Virus BLLF1 gene. Real-time detection and quantification are used to determine the viral concentration.

The analytical measurement range is 500 to 5 million IU/mL (2.7 to 6.7 log (10) IU/mL).

Specimens reported as "DETECTED" but <500 IU/mL, contain detectable levels of EB Virus DNA but the viral load is below the limit of quantification. A "NOT DETECTED" result does not rule out infection.

The limit of quantitative detection (the minimum virus level that gives a positive result in 90% of replicates) is 35 IU/mL (1.5 logIU/mL).

The clinical significance of very low positive results is uncertain and should be individually analyzed with clinical discretion.

Epstein-Barr virus (EBV) is a common and highly contagious virus primarily spread through bodily fluids, especially saliva. It is responsible for various health conditions, including infectious mononucleosis (commonly known as mono). The Centers for Disease Control and Prevention (CDC) states that a majority of people in the United States will experience EBV infection at some point in their lives due to its widespread prevalence.

After initial exposure to EBV, an incubation period of several weeks precedes the onset of associated symptoms. During the acute primary infection, the virus undergoes multiplication. While symptoms eventually subside and viral numbers decrease, latent EBV persists in the body for life and can reactivate, causing few issues unless the immune system is compromised.

In most cases, EBV infections in childhood result in minimal or no symptoms. However, adolescent infections may lead to infectious mononucleosis, characterized by fatigue, fever, sore throat, swollen lymph nodes, and potential enlargement of the spleen and liver. About 25% of affected teenagers and young adults experience these symptoms, which usually resolve within a month or two.

Diagnosis of mono is often based on symptoms, complete blood count, and a mono test assessing heterophile antibodies. Roughly 25% of mono cases do not produce these antibodies, especially in children. Testing for EBV antibodies aids in differentiating current infections from past ones.

EBV is a prominent cause of mono, distinct from other illnesses like cytomegalovirus, hepatitis, rubella, and toxoplasmosis. Distinguishing EBV is crucial, particularly for pregnant women, as some infections can harm fetuses. Proper diagnosis is also vital to rule out other conditions like strep throat.

Several tests gauge various EBV antibodies produced during infection. These antibodies' levels fluctuate throughout the infection, aiding diagnosis and providing insights into the infection's stage. Healthcare practitioners use this information to manage patient care effectively

References:

cdc.gov - About Epstein-Barr Virus (EBV)

clevelandclinic.org - Epstein-Barr Virus (EBV) - Symptoms, Causes & Treatment

testing.com - Epstein-Barr Virus (EBV) Antibody Tests

ncbi.nlm.nih.gov - Infectious Mononucleosis - PMC - NCBIEpstein-Barr Virus

mayoclinic.org - Mononucleosis and Epstein-Barr: What's the connection?

physio-pedia.com - Epstein-Barr Virus