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HelpTest Code TD Bilirubin, Total and Direct
Additional Codes
| EPIC | LAB4770 |
Clinical Significance
Bilirubin measurements are used in the diagnosis and treatment of liver, hemolytic, hematological, and metabolic disorders, including hepatitis and gall bladder block.
Methodology
Roche Cobas c503/c303
Sample Type
| Preferred Sample Type | |
|---|---|
| Light green top - Plasma | |
| Acceptable Sample Type(s) | |
|---|---|
| Dark green top - Plasma | |
| Yellow top - Serum | |
| Red top - Serum | |
Centrifuge: Yes
Specimen Minimum Volume
55 uL with insert cup
Specimen Stability
| Temperature | Time |
|---|---|
| Ambient (20-25°C) | 24 hours |
| Refrigerated (4-8°C) (store) | 7 days |
| Frozen (-20°C) | 6 months |
Separate plasma or serum from cells within 2 hours.
NOTE: Stability limits only valid for light protected specimens.
Reference Ranges
Bilirubin, Total
| Normal Ranges | |
|---|---|
| Age | Units (mg/dL) |
| >18 years | <1.2 |
| 1 month - 18 years | <1.0 |
| 3 days - 1 month | 4.0 - 12.0 |
| 2 - 3 days | 6.0 - 7.0 |
| 0 - 2 days | 2.0 - 6.0 |
| Critical Values | |
|---|---|
| Age | Units (mg/dL) |
| >18 years | N/A |
| <18 years | >15.0 |
| Technical Range |
|---|
| 0.2 - 35.1 mg/dL |
Bilirubin, Direct
| Normal Range |
|---|
| 0.0 - 0.2 mg/dL |
| Critical Value |
|---|
| >10.0 mg/dL |
| Technical Range |
|---|
| 0.08 - 27.6 mg/dL |
Rejection Criteria
| Hemolysis | varies, refer to individual test |
|---|---|
| Icterus | N/A |
| Lipemia | varies, refer to individual test |
For samples exceeding hemolysis requirements for infants, results can be released at the request of the provider/RN. The level of hemolysis is documented along with the canned message:
"Hemolysis is known to interfere with bilirubin assays, interpret results with caution. Provider notified and sample run per provider request."
Availability
| Performed | STAT |
|---|---|
| 24/7 | Yes |
Performing Laboratory
MultiCare Yakima Memorial Hospital Laboratory
MultiCare Cancer Care (NSL)
Lab Department
Chemistry
CPT Code
82247
82248
LOINC
1975-2 Bilirubin [Mass/Vol]
1968-7 Bilirubin.direct [Mass/Vol]