Home
HelpOrder Code APOAB Apolipoprotein A1 and B, Serum
Specimen Required
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions: Centrifuge and aliquot 1 mL of serum.
Useful For
Assessment of cardiovascular risk
Follow-up studies in individuals with basic lipid measures inconsistent with risk factors or clinical presentation
Definitive studies of cardiac risk factors in individuals with significant family histories of coronary artery disease or other increased risk factors
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| RBAA1 | Apolipoprotein B/A1 ratio | No | Yes |
| APOA1 | Apolipoprotein A1, S | Yes | Yes |
| APOLB | Apolipoprotein B, S | Yes | Yes |
Method Name
Automated Turbidimetric Immunoassay
Reporting Name
Apolipoprotein A1 and B, SSpecimen Type
SerumSpecimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 8 days | |
| Frozen | 60 days | ||
| Ambient | 24 hours |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
| Gross icterus | Reject |
Reference Values
Males
|
Age |
Apolipoprotein A (mg/dL) |
Apolipoprotein B (mg/dL) |
Apolipoprotein B/A1 ratio |
|
<24 months |
Not established |
Not established |
Not established |
|
2-17 years |
Low: <115 Borderline low: 115-120 Acceptable: >120 |
Acceptable: <90 Borderline high: 90-109 High: ≥110 |
<0.8 |
|
>18 years |
≥120 |
Desirable: <90 Above Desirable: 90-99 Borderline high: 100-119 High: 120-139 Very high: ≥140 |
Lower Risk: <0.7 Average Risk: 0.7-0.9 Higher Risk: >0.9 |
Females
|
Age |
Apolipoprotein A (mg/dL) |
Apolipoprotein B (mg/dL) |
Apolipoprotein B/A1 ratio |
|
<24 months |
Not established |
Not established |
Not established |
|
2-17 years |
Low: <115 Borderline low: 115-120 Acceptable: >120 |
Acceptable: <90 Borderline high: 90-109 High: ≥110 |
<0.8 |
|
>18 years |
≥140 |
Desirable: <90 Above Desirable: 90-99 Borderline high: 100-119 High: 120-139 Very high: ≥140 |
Lower Risk: <0.6 Average Risk: 0.6-0.8 Higher Risk: >0.8 |
Method Description
Antiapolipoprotein B antibodies react with the antigen in the sample to form antigen:antibody complexes which, following agglutination, can be measured turbidimetrically.(Package Insert: Tina-quant Apolipoprotein B, Roche Diagnostics. Indianapolis, IN. 05/2019)
Antiapolipoprotein A-1 antibodies react with the antigen in the sample to form antigen:antibody complexes which, following agglutination, can be measured turbidimetrically.(Package Insert: Tina-quant Apolipoprotein A-1, Roche Diagnostics. Indianapolis, IN. 05/2019)
Day(s) Performed
APOA1: Monday through Sunday
APOLB: Monday through Saturday
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
82172 x 2
Forms
If not ordering electronically, complete, print, and send a Cardiovascular Test Request Form (T724) with the specimen.