When you skeptical that maybe you are having the Dengue Fever, a combination of all three tests; the Dengue NS1 test, Dengue IgM & IgG test should be performed at the same time to diagnose early or late covid infection.
You need to do all of these tests to know which stage of infection are your at if you have dengue fever.
A complete blood count (CBC) or CRP test is required to determine if it's viral fever or dengue fever with a close eye on the platelet counts in the CBC report.