Neopterin
Use
Measurement of neopterin in serum
Special Instructions
Neopterin measurement is applied in numerous clinical settings due to its relative stability and ease of assay. It is a surrogate marker for viral load in HIV, used to discern graft rejection risk, and applied in cardiovascular disease research for its predictive value.
Limitations
The test was developed by Labcorp and has not been cleared or approved by the FDA. Neopterin concentrations are increased in renal disease due to impaired excretion and increased production from systemic inflammation, which can affect test interpretation.
Methodology
Immunoassay (EIA)
Biomarkers
LOINC Codes
- 34908-4
- 34908-4
Result Turnaround Time
3-8 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.8 mL
Minimum Volume
0.3 mL
Container
Red-top tube, gel-barrier tube, or lavender-top (EDTA) tube
Collection Instructions
If tube other than a gel-barrier tube is used, transfer separated serum or plasma to a plastic transport tube.
Storage Instructions
Refrigerate. Protect from exposure to ultraviolet light and sunlight.
Causes for Rejection
Gross lipemia; gross hemolysis; gross icterus