Bilirubin, Total and Direct, Neonatal
Use
This test is used to assess bilirubin levels (total, direct, and indirect) in newborn infants, aiding in the diagnosis and monitoring of neonatal jaundice, and evaluating liver function or conjugation disorders in early postnatal period.
Special Instructions
Patient should be less than 60 days of age. Specimen must be protected from light. Draw and wrap spun serum separator Microtainer® tubes in foil to minimize photodegradation.
Limitations
Endogenous carotenoids in infants older than ten days may affect results. Hemolysis and inappropriate anticoagulants (other than heparin) may interfere. Light exposure must be minimized.
Methodology
Other
Biomarkers
Result Turnaround Time
3 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.3 mL
Minimum Volume
0.2 mL
Container
Amber Microtainer® serum separator tube (SST) or spun SST wrapped in foil
Collection Instructions
Draw 2 amber Microtainer® SSTs or wrap 2 spun SSTs in foil. Avoid hemolysis.
Patient Preparation
Patient should be less than 60 days of age.
Causes for Rejection
Hemolysis; anticoagulants other than heparin
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 24 hours (protected from light) |
| Refrigerated | 72 hours (protected from light) |
| Frozen | 90 days (protected from light) |