UW Hospital and Clinics Lab Test Directory
| Test Name: |
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Lipoprotein (a)
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| Test Code(s): |
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LPA / XLPA
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| CPT Code(s): |
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83695
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| Methodology: |
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Fixed Time Nephelometry
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| Days Performed: |
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Mon-Fri, dayshift.
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| Turnaround Time: |
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Stat: Not available stat.
Routine: 4 days.
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Specimen Requirements
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| Specimen: |
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Blood
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| Patient Preparation: |
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Patient must fast 10-14 hours. The patient can only have water, black coffee or calorie free drinks during the fasting period.
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| Collection Container: |
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Preferred: Red top
Also Acceptable:
Red cap with yellow ring (SST)
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| Collection Volume: |
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Preferred: 3 mL
Pediatrics: 1 mL
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| Sample Analyzed: |
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Serum
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| Volume Required: |
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Preferred: 1 mL
Pediatrics: 0.3 mL
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| Specimen Processing: |
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Centrifuge and transfer cell-free serum to clear plastic vial. Refrigerate.
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| Specimen Transport: |
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Transport specimen to UWHC Core Laboratory (B4/220).
Transport with coolant pack if coming from UWHC Satellite lab locations.
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| Stability: |
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Refrigerated: 7 days
Frozen: 1 month at -20° C or below. Note: Avoid repeat freeze and thaw.
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Interpretation
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Expected Results:
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| Lp(a) - CHD Risk Assessment |
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| 18 years and up: |
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0 - 29 mg/dL
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Desirable |
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≥ 30 mg/dL
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Increased |
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Lp(a),
Lpa,
Lipoprotein a
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