Dengue NS1 Antigen Test
A Dengue NS1 test detects the NS1 (non-structural protein 1) antigen of the dengue virus in your blood. This test is particularly useful for early detection during the first few days of illness, before antibodies have developed.
Doctor's Assessment Included
Dengue Virus NS1: what this test measures
This test detects the NS1 antigen, a viral protein secreted by dengue virus-infected cells during the acute phase of infection. NS1 can be detected in the blood from the first day of fever onset up to approximately nine days. The test provides a qualitative result indicating whether the NS1 antigen is present.
Dengue Virus NS1: why this value matters
The NS1 test enables early diagnosis of dengue infection, even before the immune system has produced detectable antibodies. Early detection allows for timely clinical management and monitoring for complications. This is especially important in dengue-endemic regions where prompt diagnosis can guide appropriate care. Results should be interpreted by a healthcare professional.
Dengue Virus NS1: how the blood test works
- Referral
- No GP referral needed. After the order we arrange the referral through ZorgDomein, within one business day; orders after 17:00 or at the weekend start on the next business day. ZorgDomein emails a barcode, and that barcode is what the draw site needs.
- The draw
- A blood draw from a vein in the arm, at a partner laboratory's draw site. No home kit, no finger prick.
- Which test
- on its own €49,-
- Where
- 650+ draw sites run by independent laboratories across the Netherlands. Draw sites
Dengue Virus NS1: when is testing worthwhile?
Testing is most valuable during the first one to five days of fever onset in individuals who have recently visited dengue-endemic areas. The NS1 antigen may become undetectable after approximately nine days. Consult a healthcare professional for guidance on testing timing.
Dengue Virus NS1: lifestyle and this value
Take preventive measures against mosquito bites in endemic areas. If you develop sudden high fever after travelling to a dengue-endemic region, seek medical attention promptly. Stay hydrated and avoid self-medication with aspirin or ibuprofen. Rest and monitor your symptoms closely during the acute phase.
Dengue Virus NS1: frequently asked questions
How is the NS1 test different from dengue antibody tests?
The NS1 test detects a viral protein produced during active infection, making it useful for early diagnosis within the first days of illness. Antibody tests (IgM and IgG) detect the immune system's response to the virus, which takes longer to develop. The NS1 test is most valuable in the early acute phase, while antibody tests become more useful later.
Can the NS1 test be negative even if I have dengue?
Yes, the NS1 antigen may become undetectable after approximately five to nine days of illness. If your symptoms persist and dengue is still suspected, your healthcare professional may recommend antibody testing (IgM or IgG) for a more complete assessment.
Medical reviewer
Medical standards
Dr. Naimi oversees the medical standards behind our content and assessments.
Medical policy
Welzijn en Sport Official BIG registration BIG 49928676701 Opens in a new tab
Doctor's Assessment Included
Every result includes a professional assessment from a BIG-registered doctor. For treatment decisions, discuss your results with your GP.
Dengue Virus NS1
€49,-