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HelpTest Code APOL Apolipoprotein A1 and B, Serum
Reporting Name
Apolipoprotein A1 and B, SPerforming Laboratory
Mayo Clinic Laboratories in Rochester
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
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL serum
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Minimum Volume
0.5 mL serum
Specimen Type
SerumSpecimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 8 days |
| Frozen | 60 days | |
| Ambient | 24 hours |
Day(s) Performed
Monday through Sunday
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 |
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 Name
APOA1, APOLB: Automated Turbidimetric Immunoassay
RBAA1: Calculation
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.CPT Code Information
82172 x 2
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| APOAB | Apolipoprotein A1 and B, S | 55724-9 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| APOLB | Apolipoprotein B, S | 1884-6 |
| APOA1 | Apolipoprotein A1, S | 1869-7 |
| RBAA1 | Apolipoprotein B/A1 ratio | 1874-7 |
Report Available
1 to 3 daysForms
If not ordering electronically, complete, print, and send a Cardiovascular Test Request Form (T724) with the specimen.