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Test ID NBILI Neonatal Bilirubin, Serum

Useful For

Assessing liver function


Evaluating a wide range of diseases affecting the production, uptake, storage, metabolism, or excretion of bilirubin


Monitoring the efficacy of neonatal phototherapy

Method Name

Total Bilirubin: Photometric, Diazonium Salt

Direct Bilirubin: Colormetric Diazo Method

Reporting Name

Neonatal Bilirubin, S

Specimen Type


Shipping Instructions

Ship specimen in amber vial to protect from light.

Necessary Information

Patient's age and sex are required.

Specimen Required

Supplies: Sarstedt 5 mL Aliquot Tube (Amber) (T915)

Collection Container/Tube:

Preferred: 2 Serum gel Microtainers

Acceptable: 2 Red top Microtainers

Submission Container/Tube: Amber vial

Specimen Volume: 0.5 mL

Collection Instructions:

1. Serum gel Microtainers should be centrifuged within 2 hours of collection.

2. Red-top Microtainers should be centrifuged and aliquoted within 2 hours of collection.

Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 24 hours LIGHT PROTECTED
  Frozen  30 days LIGHT PROTECTED
  Ambient  6 hours LIGHT PROTECTED

Reference Values


≥12 months: 0.0-0.3 mg/dL

Reference values have not been established for patients who are <12 months of age.



0-6 days: Refer to for information on age-specific (postnatal hour of life) serum bilirubin values.

7-14 days: <15.0 mg/dL

15 days to 17 years: ≤1.0 mg/dL

≥18 years: ≤1.2 mg/dL

Day(s) Performed

Monday through Sunday

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

82247-Bilirubin, total

82248-Bilirubin, direct

LOINC Code Information

Test ID Test Order Name Order LOINC Value
NBILI Neonatal Bilirubin, S 34543-9


Result ID Test Result Name Result LOINC Value
BILID Bilirubin, Direct 1968-7
BILIT Bilirubin Total, S 1975-2

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

Profile Information

Test ID Reporting Name Available Separately Always Performed
BILIT Bilirubin Total, S Yes Yes
BILID Bilirubin, Direct Yes Yes

Report Available

Same day/1 to 2 days

NY State Approved


Disease States

  • Hyperbilirubinemia