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HelpTest Code DNSAG Dengue Virus NS1 Antigen, Serum
Reporting Name
Dengue Virus NS1 Ag, SPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Aiding in the diagnosis of dengue virus infection
Method Name
Enzyme-Linked Immunosorbent Assay (ELISA)
Specimen Required
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions: Centrifuge and aliquot serum into plastic vial.
Specimen Type
SerumSpecimen Minimum Volume
0.4 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 14 days | |
| Frozen | 14 days |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Gross icterus | Reject |
Reference Values
Negative
Reference values apply to all ages.
Interpretation
Positive:
The presence of dengue nonstructural protein 1 (NS1) antigen is consistent with acute-phase infection with dengue virus.
The NS1 antigen is typically detectable within 1 to 2 days following infection and up to 9 days following symptom onset.
NS1 antigen may also be detectable during secondary dengue virus infection, but for a shorter duration of time (1-4 days following symptom onset).
Negative:
The absence of dengue NS1 antigen is consistent with the lack of acute-phase infection.
The NS1 antigen may be negative if specimen is collected immediately following dengue virus infection (<24-48 hours) and is rarely detectable following 9 to 10 days of symptoms.
Day(s) Performed
Tuesday
Report Available
Same day/1 to 7 daysTest Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
86790
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| DNSAG | Dengue Virus NS1 Ag, S | 75377-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| DENS1 | Dengue NS1 Ag, S | 75377-2 |
| DNAGI | Dengue Ag Interpretation | 69048-7 |
Forms
If not ordering electronically, complete, print, and send Infectious Disease Serology Test Request (T916) with the specimen.
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| DENS1 | Dengue NS1 Ag, S | No | Yes |
| DNAGI | Dengue Ag Interpretation | No | Yes |