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HelpTest Code LAB3202 Apolipoprotein A1, Serum
Additional Codes
APO1
Specimen Required
Preferred: Serum gel
Acceptable: Red top
Specimen Volume: 0.5 mL
Collection Instructions:
1. Centrifuge and aliquot within 2 hours of collection.
2. Red-top tubes should be centrifuged and aliquoted within 2 hours of collection.
Secondary ID
607591Useful For
Evaluating risk for atherosclerotic cardiovascular disease
Aiding in the detection of Tangier disease
Method Name
Automated Turbidimetric Immunoassay
Specimen 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) |
|
<24 months |
Not established |
|
2-17 years |
Low: <115 Borderline low: 115-120 Acceptable: >120 |
|
>18 years |
≥120 |
Females
|
Age |
Apolipoprotein A (mg/dL) |
|
<24 months |
Not established |
|
2-17 years |
Low: <115 Borderline low: 115-120 Acceptable: >120 |
|
>18 years |
≥140 |
Interpretation
Low levels of apolipoprotein A1 (ApoA1) confer increased risk of atherosclerotic cardiovascular disease.
ApoA1 below 25 mg/dL may aid in the detection of a genetic disorder such as Tangier disease.
ApoA1 is often interpreted as a ratio with apolipoprotein B (ApoB).
Method Description
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. 05/2017)
Day(s) Performed
Monday through Sunday
Report Available
1 to 2 daysSpecimen Retention Time
1 weekPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
82172
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| APOA1 | Apolipoprotein A1, S | 1869-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| APOA1 | Apolipoprotein A1, S | 1869-7 |
Forms
If not ordering electronically, complete, print, and send a Cardiovascular Test Request Form (T724) with the specimen.