AFP Tumor Marker
| Abbrev Code: | FETO | ||
| Order Code: | LAB559 | Order Name: | AFP Tumor Marker |
| Methodology: | Roche: Electrochemiluminescence immunoassay (ECLIA) | ||
| CPT Codes: | 82105 x1, 82105 x1 | ||
| Turnaround Time: | Performed and reported 24 hours/day. | ||
| Special Instructions: | This test is used as a tumor marker, not for neural tube defect screening. | ||
| Associated Links: | |||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 2.5 mL |
| Minimum\Peds Volume: | 0.6 mL |
| Container: | Green (lithium heparin, gel) Alternate Containers: Green (lithium heparin, no gel), Red (no gel), Red or gold (gel) |
| Causes for Rejection: | Gross hemolysis |
Processing and Shipping
| Specimen Processing: | Centrifuge and aliquot 1.25 mL, 0.2 mL minimum. Store in refrigerator. |
| Shipping Instructions: | Ship at refrigerated temperature. |
| Stability: | 5 days at room temperature; 14 days refrigerated; 6 months frozen. Samples may be frozen 3 times. |
| Test Performed at or Referral Lab | Chemistry (Roche-UMMC East) |
Interpretive
| Reference Range: | 1 year and up <8.1 ug/L.
Reference values for adult non-pregnant female only, fetal production of AFP elevates values in pregnant women. Ranges for newborns are not available, but concentrations over 100,000 ug/L have been reported in normal newborns. Values rapidly decline to <100 ug/L by 5 months and reach adult levels by 1 year. The ADVIA Centaur AFP method is used. Results obtained with different assay methods or kits cannot be used interchangeably. |
| Use: | Aids in the differential diagnosis and therapeutic monitoring of germinal neoplasms of the testis, ovary, retroperitoneum, mediastinum, and heptocellular carcinoma. Seminomas do not produce AFP. |
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