Dengue NS1 Antigen Qualitative Test ek diagnostic blood test hai jo dengue virus ke NS1 (Non-Structural Protein 1) antigen ki upasthiti ka pata lagata hai. Yeh antigen aam taur par infection ke shuruaati dino (lagbhag pehle 1–7 din) mein khoon mein paya jata hai. Test ka parinaam Positive ya Negative roop mein diya jata hai aur yeh dengue sankraman ki early diagnosis mein sahayak hota hai. Test ko clinical symptoms aur anya laboratory findings ke saath interpret kiya jana chahiye.