Product News

PanBio Dengue Early Rapid - A Dengue NS1 Antigen Immunochromatographic Assay

The Dengue Early Rapid test is here!

Mar 22, 2010

Inverness Medical Innovations has added an exciting new product to the Panbio dengue product range.

 

The Dengue Early Rapid is a dengue NS1 antigen immunochromatographic assay. It is for the qualitative detection of NS1 antigen in serum, used as an aid in the clinical laboratory diagnosis of patients with clinical symptoms consistent with dengue fever. The Panbio Dengue Early Rapid should be used in conjunction with other dengue serology tests.

Increase your diagnostic sensitivity by up to 30%

 

Use the Dengue Early Rapid test in conjunction with the Panbio Dengue Duo Cassette to increase your diagnostic sensitivity by up to 30%.

 

By combining antigen and antibody testing, you can bridge the diagnostic gap. In a study conducted in Malaysia8, the combination of the Dengue Early Rapid test with the Dengue Duo Cassette produced a sensitivity of over 90%!

The results are shown below in Table 1.

 

Table 1

 

Panbio Rapid Diagnostic Assays (D1-15)

 

Dengue Early Rapid

Dengue Duo Cassette

Early and Duo Combined

Sensitivity (%)

62.0

74.5

93.5

Detect Dengue Early

NS1 detection can help to diagnose an active dengue infection from the very first day of symptoms as the dengue NS1 antigen can be detected in serum from the very first day that fever appears.1,2,3

 

 

Earlier diagnosis of dengue allows earlier implementation of supportive therapy and monitoring. This reduces risk of complications such as DHF or DSS, especially in countries where dengue is endemic.6

"Most patients seek medical care three to six days after their symptoms being. During this time IgM antibodies may not be present, or may not be at detectable levels.7"

Excellent specificity

 

Detection of NS1 can also provide a specific diagnosis of dengue infection.1,2,3,4 This is especially valuable in areas where flavivirus serological cross reactivity could confound a diagnosis.5 In studies conducted in Malaysia and Vietnam8, the Dengue Early Rapid test showed excellent specificity.

 

The data is shown in Table 2.

 

Table 2

Serological specificity

NS1

Dengue negative - Vietnam

96.0%

Dengue negative - Malaysia

96.7%

 

Detect Dengue Quickly


 

Read Results Clearly

 

 

"NS1 circulates at high levels in the sera of patients experiencing primary as well as secondary infections during the entire clinical phase of illness and in the first few days of convalescence.1"


Available Now

 

The Panbio Dengue Early Rapid test is available now*. For further information please contact eitherInverness Medical or your Panbio distributor.

*the test may not yet be registered for use in your country - please contact either Inverness Medical or your Panbio distributor for more information on product availability.


References

  1. Alcon, S., et al (2002), “Enzyme-linked Immunosorbent Assay Specific to Dengue Virus Type 1 Nonstructural Protein NS1 Reveals Circulation of the Antigen in the Blood during acute phase of disease in patients experiencing primary or secondary infections”. Journal of Clinical Microbiology, Feb 02, 376-381

  2. Young. P., et al (2000) An Antigen Capture Enzyme- Linked Immunosorbent Assay Reveals High Levels of the Dengue Virus Protein NS1 in the Sera of Infected Patients. J. Clin Micro. Mar. 2000; p1053-1057

  3. Libraty. D., et al (2002) High Circulating Levels of the Dengue Virus Nonstructural Protein NS1 Early in Dengue Illness Correlate with the Development of Dengue

  4. Xu, H., et al (2006), “Serotype 1- Specific Monoclonal Antibody-Based Antigen Capture Immunoassay for Detection of Circulating Nonstructural Protein NS1: Implications for Early Diagnosis and Serotyping of Dengue Virus Infections”. Journal of Clinical Microbiology; Aug; 2872-2878

  5. Blacksell, S., et al (2008) Evaluation of the Panbio® dengue virus non-structural 1 antigen detection and immunoglobulin M antibody enzyme-linked immunosorbent assay for the diagnosis of acute dengue infection in Laos. Diagnostic Microbiology and Infectious Disease 60; 43-49

  6. Ong, A., et al (2007) Fatal dengue hemorrhagic fever in adults during a dengue epidemic in Singapore. Int. J Infect Dis. 11(3):263-267

  7. Hsieh, C.J. and Chen, M.J. (2009) Letter to the Editor. Journal of Clinical Virology 44; 10

  8. Data on file