Laboratory Medicine

Test catalogue

Apolipoprotein B (APOB)
Test Name Apolipoprotein B (APOB)
Specimen Type / Requirements Container Type = Gold (SST) Minimum Testing Volume = 0.5 mL Tube must fill to at least ½ or greater of its vacuum capacity
Specimen Handling Collection Instructions: Ensure both sample and requisition are labelled properly Serum or plasma, free from hemolysis, collected with or without gel separator. Write your initials, date and time of collection on the collection label. Laboratory Staff Instructions: Lipemic samples or frozen samples that become turbid upon thawing must be clarified by centrifugation (10 minutes at 15,000 x g). Separate serum or plasma from cells within 2 hours of collection. Thaw only once. Stability: Stable at room temperature for 1 day, refrigerated for 8 days, frozen for 3 months (– 20°C) or 5 years (– 70°C). Thaw only once. Transportation: Transport at room temperature ASAP. Sample Rejection Criteria: Unlabeled or Not Sufficient Quantity samples will be rejected.
Required Documentation
Turnaround Time (TAT) 7 Days	Test Utilization N/A
Reference Value 0 to < 15 days: < 0.7 g/L 15 days to < 1 Year: < 1.3 g/L 1 to < 6 Years: 0.4 – 0.9 g/L 6 to < 19 Years: < 0.9 g/L	19+ years: Male 0.66 – 1.44 g/L Female 0.60 – 1.41 g/L
Test Code APOB	Methodology Turbidimetric immunoassay
Testing Location SMH-Biochemistry	Other Information Last Updated: June 22, 2026

Apolipoprotein B (APOB)

Test Name

Apolipoprotein B (APOB)

Specimen Type / Requirements

Container Type = Gold (SST)

Minimum Testing Volume = 0.5 mL

Tube must fill to at least ½ or greater of its vacuum capacity

Specimen Handling

Collection Instructions: Ensure both sample and requisition are labelled properly Serum or plasma, free from hemolysis, collected with or without gel separator.

Write your initials, date and time of collection on the collection label.

Laboratory Staff Instructions: Lipemic samples or frozen samples that become turbid upon thawing must be clarified by centrifugation (10 minutes at 15,000 x g). Separate serum or plasma from cells within 2 hours of collection. Thaw only once.

Stability: Stable at room temperature for 1 day, refrigerated for 8 days, frozen for 3 months (– 20°C) or 5 years (– 70°C). Thaw only once.

Transportation: Transport at room temperature ASAP.

Sample Rejection Criteria: Unlabeled or Not Sufficient Quantity samples will be rejected.

Required Documentation

Turnaround Time (TAT)

7 Days

Test Utilization

N/A

Reference Value

0 to < 15 days: < 0.7 g/L

15 days to < 1 Year: < 1.3 g/L

1 to < 6 Years: 0.4 – 0.9 g/L

6 to < 19 Years: < 0.9 g/L

19+ years:

Male 0.66 – 1.44 g/L

Female 0.60 – 1.41 g/L

Test Code

APOB

Methodology

Turbidimetric immunoassay

Testing Location

SMH-Biochemistry

Other Information

Last Updated: June 22, 2026