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HelpTest Code AFP Alpha Fetoprotein
Patient Preparation
No special patient preparation required
Collection Method
Venous collection
Minimum Volume
- Adults: 1 mL
- Pediatric: 0.6 mL
Container
Gold Top / Serum Separator / Additive Free
Preferred Specimen
Gold Top SST
Acceptable Specimens
Serum:
- Gold Top SST
- Red Top
Plasma:
- Light Geen Top (lithium heparin)
- Pink Top (K3 EDTA)
- Dark Green Top (sodium heparin)
Reference or Target Ranges
≤8.30 ng/mL
Reportable Units
ng/mL
Critical Value
Not defined for this assay
Reasons for Rejection
| Hemolysis Threshold | 2200 mg/dL |
| Icterus Threshold | 65 mg/dL |
| Lipemia Threshold | 1500 mg/dL |
| Other | QNS, contaminated, improperly Labeled, improper specimen type |
Specimen Stability
| Ambient | 1 day |
| Refrigerated (4°C to 8°C) | 7 days |
| Frozen(-40°C to 0°C) | 3 months |
Performance Information
| Days and Time Performed | 24/7 |
| Expected Turn Around Time | Stat: 1 hour Routine: 4 hours |
| Stat Availability | Yes |
| Performing Bench | WCH Chemistry |
| Methodology/Method Description | Roche Cobas – 2 Step incubation sandwich assay |
Additional Information/Important Notes
The measured AFP value of a patient’s sample can vary depending on the testing procedure used. The laboratory finding must therefore always contain a statement on the AFP assay method used. AFP values determined on patient samples by different testing procedures cannot be directly compared with one another and could be the cause of erroneous medical interpretations. The University system uses the Roche Cobas 6000 for all AFP testing.
CPT Codes
82105