Order Code: C114
ABN Requirement: No
Synonyms: TBili
Specimen: Serum
Volume: 0.5 mL
Minimum Volume: 0.2 mL
Container: Gel-barrier tube (SST, Tiger Top)
Collection:
- Collect and label sample according to standard protocols.
- Gently invert tube 5 times immediately after draw. DO NOT SHAKE.
- Allow blood to clot 30 minutes.
- Centrifuge for 10 minutes.
Transport: Store serum at 2°C to 8°C after collection and ship the same day per packaging instructions included with the provided shipping box.
Stability:
Ambient (15-25°C): 1 day
Refrigerated (2-8°C): 7 days
Frozen (-20°C): 6 months
Causes for Rejection: Specimens other than serum; improper labeling; samples not stored properly; samples older than stability limits
Methodology: Photometric
Turn Around Time: 1 to 3 days
Reference Range:
| Age | mg/dL |
| All Ages | <1.3 |
Priority Value:
| Age | Priority Value 1 (mg/dL) |
| ≤2 years | >15.0 |
Clinical Significance: Measurement of the levels of bilirubin is used in the diagnosis and treatment of liver, hemolytic, hematologic, and metabolic disorders, including hepatitis and gallbladder obstructive disease.
Limitations: Ascorbic acid in 30 mg/dL causes artificially low total bilirubin results. Cyanokit (Hydroxocobalamin) may cause interference with results. In very rare cases gammopathy may cause unreliable results. Results from certain multiple myeloma patient samples may show a positive bias in recovery, but not all patients show the bias.
The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.