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Test Code TBIL Total Bilirubin

Important Note

Protect specimens from light.

This orderable is for patients >30 days of age. For patients ≤30 days of age Neonatal Bilirubin must be used.

Additional Codes

Cerner

NextGen

Bilirubin Total

Bilirubin Total

Bili T

 

BiliT

 

Methodology

Colorimetric (reflectance spectrophotometry).

Patient Preparation

None

Collection Instructions

Standard phlebotomy practices.

Protect specimens from light. 

Specimen Requirements

Container

Specimen Type

Tube

Lithium Heparin Plasma

PST

 or  or 

Serum

 or 

SST

 or  or 

Stability

Storage

Temperature

Stability

Room Temperature

18-28°C

≤ 4 hours

If separated within 4 hours

Refrigerated

 2-8°C

≤ 7 days

If separated within 4 hours

Frozen

≤-18 °C

≤ 6 months

Rejection Criteria

Gross Hemolysis

Result Reporting and Reference Values

Reported in mg/dL.

Age

Low

High

Critical Low

Critical High

30 days – 18 years

0.1

1.3

N/A

N/A

18 -150 years

0.2

1.3

N/A

N/A

Reflex Testing

None

Limitations

  • Ortho reports no effects with the following:
    • Lipemia up to 800 mg/dL
  • The following interpretive data is visible to practitioner:
    • Cefotiam (Pansporin- used in Japan) has been reported to show very large positive bias.

Useful For

Total bilirubin in serum and plasma is the sum of unconjugated bilirubin (Bu), mono- and di-glucuronide conjugated bilirubin (Bc) and delta bilirubin (DELB), a bilirubin fraction covalently bound to albumin.  With the exception of anicteric jaundice, total serum bilirubin is invariably increased in jaundice. Causes of jaundice are prehepatic, resulting from various hemolytic diseases; hepatic, resulting from hepatocellular injury or obstruction; and posthepatic, resulting from obstruction of the hepatic or common bile ducts.

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