Sign in →

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: Amber Frosted Tube, 5 mL (T192)

Collection Container/Tube:

Preferred: 2 Serum gel Microtainers

Acceptable: 2 Red top Microtainers

Submission Container/Tube: Amber vial (T192)

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
Serum Refrigerated (preferred) 24 hours
  Frozen  30 days
  Ambient  6 hours

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) and Time(s) Performed

Monday through Sunday; Continuously

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, S 1968-7
BILIT Bilirubin Total, S 1975-2

Test Classification

This test has been cleared or approved by the U.S. 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