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Laboratory Test Directory

Bilirubin, neonatal


Name Method Department Units
Bilirubin, Neonatal Colorimetric, reflectometry
Core Lab, Chemistry, Routine mg/dL

Battery Members

Unconjugated bilirubin, Conjugated Bilirubin, Neonatal bilirubin

Specimen Requirements

Plasma Spun, Serum Spun

Container Type Container Size Specimen Volume

Green tube (Lithium heparin), with Gel

Micro sample tube 0.3 mL

Green tube (Lithium heparin), No Gel

3 mL 3 mL

Green tube (Lithium heparin), No Gel

Micro sample tube 1 mL

Gold tube, (SST) with Gel

3.5 mL 3.5 mL

Red tube, (no anticoagulant), No Gel

3 mL 3 mL

Green tube (Lithium heparin), with Gel

3 mL 3 mL

Refrigerated - 7 day(s)

Specimen Preparation

  • Avoid excessive light exposure. Protection is sufficient if kept in closed, dark container (refrigerator, transport bag). If this is not possible, and light exposure is expected to exceed 4 hours, please protect from light by wrapping in foil or other similar product.
  • Centrifuge within 4 hours, separate supernatant and refrigerate

Reasons for Rejection

  • Gross hemolysis
  • Not received at proper temperature
  • Not received within specified time frame


Neonatal bilirubin is calculated from the sum of unconjugated and conjugated bilirubin. Order for patients less than or equal to 15 days of age.

CPT Code

  • 82248
  • 84311