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HelpTest Code LAB168 Bilirubin: Total, Direct, and Indirect
Useful For
Detecting hemolytic anemia, diagnosing liver disease, and evaluating degrees of jaundice.
Profile Information
| Test Code | Test Name | Methodology |
Available Separately |
|---|---|---|---|
| LAB52 |
Bilirubin Direct (Conjugated) |
Photometric, Diazotized Sulfanilic Acid (Jendrassik-Grof) | Yes |
| LAB50 | Bilirubin Total |
Colorimetric Diazo |
Yes |
| N/A | Bilirubin Indirect (Unconjugated) | Calculation | No |
Performing Laboratory
Bozeman Health Laboratory Services
Specimen Requirements
Specimen Type: Plasma or serum
Container/Tube: Light-green top (lithium heparin gel), red top, or gold top
Specimen Volume: 2 mL
Specimen Minimum Volume: 0.5 mL
Specimen Pediatric Volume: 1 microtainer (amber)
Collection Instructions: Protect specimen from light.
Specimen Rejection: Hemolyzed samples may be rejected.
Specimen Transport Temperature
Ambient<24 hours/Refrigerated>24 hours
Specimen Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma or Serum | Ambient | 1 day |
| Refrigerated | 7 days | |
| Frozen | 6 months |
Note: Stability values are only valid if care is taken to prevent exposure to light.
Reference Values
| Component | Age Break | Normal Range | Critical Values |
|---|---|---|---|
| Neonatal Bilirubin, Total | 0-1 days of life | 0.0-4.8 mg/dL | 6.4 and higher |
| 1-2 days of life | 0.0-8.8 mg/dL | 10.6 and higher | |
| 2-3 days of life | 0.0-12.1 mg/dL | 13.5 and higher | |
| 3-4 days of life | 0.0-14.0 mg/dL | 14.5 and higher | |
| 4-30 days of life | 0.0-15.5 mg/dL | 16.1 and higher | |
| Neonatal Bilirubin, Direct | 0-60 days | 0.2-1.0 mg/dL | >20.0 mg/dL |
| ≥ 60 days | 0.0-0.3 mg/dL | >20.0 mg/dL | |
| Neonatal Bilirubin, Indirect | 0-30 days | 0.0-11.7 mg/dL | |
| ≥ 30 days | 0.0-1.0 mg/dL |
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
82247
82248