What should you know about an IgG anti-dengue test?

IgG is an antibody made by the immune system after exposure to an infection. In dengue, IgG may remain detectable after recovery, so a positive result does not by itself show when infection occurred. Early illness may require a different test or a repeat sample, depending on when symptoms began. The clinician considers the result alongside fever pattern, travel or mosquito exposure, examination and other blood findings. A laboratory result cannot predict how severe the illness will become.

Tell the clinician when [Fever](/symptoms/fever/) began, where you travelled or lived, and whether you have had dengue before. Mention medicines, pregnancy or other health conditions. Rest, drink fluids as advised and use only fever medicines recommended for you; ask before taking products that can increase bleeding risk. Prevent mosquito bites while unwell to reduce the chance of onward spread. A [GP Consultation](/treatments/consultations-and-assessment/gp-consultation/) can help arrange the right follow-up.

Seek urgent medical help for severe abdominal pain, repeated vomiting, bleeding, black stools, unusual bruising, marked drowsiness, breathing difficulty, faintness or inability to drink. [Easy Bruising](/symptoms/easy-bruising/) can be relevant, but do not wait for a test result when warning signs appear. [Dengue Fever](/conditions/dengue-fever/) can change as the fever settles, so worsening symptoms deserve prompt assessment.

Ask whether the IgG result suggests past exposure or needs confirmation, which test fits the illness stage, and whether your blood count or hydration needs monitoring. Ask which pain or fever medicines are suitable, what symptoms should trigger emergency care, and when follow-up is needed.