Dengue
Point-of-care rapid testing for dengue. OEM/ODM manufacturer.
Overview
Dengue is a mosquito-borne flavivirus infection endemic across tropical and subtropical regions. An estimated 100–400 million infections occur annually (WHO). Early diagnosis guides fluid management and case classification.
Diagnostic Markers & Methods
NS1 antigen (early, day 1–7) · IgM/IgG serology (later, ~day 3–5+) · combined NS1+IgM/IgG for the widest window. RT-PCR for confirmation.
Testing Window
NS1: day 1–7 of fever (early). IgM: ~day 3–5. IgG: later, persists.
Interpretation
NS1 positive = acute infection; IgM/IgG positive = recent or past exposure. Flavivirus cross-reactivity (Zika) must be considered in serology.
Confirmatory Testing
RT-PCR (viral RNA) is the reference; paired serology on acute and convalescent samples.
The Author's Take
Position: For a distributor sourcing dengue rapid tests, stock the combined NS1 + IgM/IgG device rather than single-marker tests — it covers the full diagnostic window and cuts your rejection risk.
- NS1 catches the first week; IgM/IgG covers the later serology window — a combo widens coverage in one SKU.
- Fewer SKUs to stock and document means lower inventory and registration burden.
- Tropical markets want room-temperature-stable kits with CE — confirm both before you commit.
This is the buyer-advisor view of the technical team — editorial guidance, not a substitute for product IFU or local regulatory requirements.
Frequently Asked Questions
How accurate are dengue rapid tests?
NS1 antigen tests are most sensitive in the first week; IgM/IgG serology is more reliable later. Combined NS1+IgM/IgG devices offer the best overall detection across the illness course. All rapid results are screening-grade and may need confirmation.
Can a dengue rapid test distinguish primary from secondary infection?
IgG/IgM patterns provide clues (IgM-dominant suggests primary; rapid IgG rise suggests secondary), but a rapid test alone cannot definitively classify — interpret with clinical and epidemiological context.
What is the diagnostic window for dengue NS1?
NS1 is typically detectable from day 1 of fever through the first week, before IgM reliably appears — making it the earliest serological marker of acute dengue.
Products (3)
Need a full Dengue testing panel? Request datasheets, IFU and OEM/ODM options.