When is NS1 used?
CDC guidance states that NS1 antigen may be detected during the acute phase, especially within the first 0–7 days after symptoms begin. The appropriate test combination depends on illness timing and clinical assessment.
An NS1 antigen test can support diagnosis of acute dengue during the early phase of illness. Suspected dengue requires timely medical assessment and should not wait for a website booking or result alone.
CDC guidance states that NS1 antigen may be detected during the acute phase, especially within the first 0–7 days after symptoms begin. The appropriate test combination depends on illness timing and clinical assessment.
If dengue is suspected, obtain medical assessment without waiting for test results. Urgent symptoms or worsening condition require immediate clinical care. Do not self-treat based only on online information.