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| 92145:HER-2/neu, SERUM | |||||||||
| Alias Names: | Human Epidermal growth factor Receptor 2 / ErbB-2 / c-erbB-2 / EGF receptor 2 / breast cancer / HER2 / HER / HER 2 / HER2 | ||||||||
| Methodology: | Enzyme-Linked Immunosorbent Assay (ELISA) | ||||||||
| Edit Date: | 6/1/2009 | ||||||||
| Performed: | Thursday | ||||||||
| Released: | 1-8 days after setup at PeaceHealth Laboratories’ reference lab. | ||||||||
| CPT Code: | 83950-90 | ||||||||
| Specimen Collection Details | |||||||||
| Collection: | One 7.5 mL serum separtor tube (SST). | ||||||||
| Handling: | Allow to clot, centrifuge and separate serum from cells and pour into a plastic vial. Freeze. | ||||||||
| Stability: | 4 days ambient, 3 weeks refrigerated, or 1 year frozen. | ||||||||
| Standard Volume: | 1 mL serum. | ||||||||
| Minimum Volume: | 300 µL serum. | ||||||||
| Transport: | Frozen. | ||||||||
| Comments: | This assay is performed using the Siemens Medical Solutions Diagnostics HER-2/neu Microtiter ELISA. Results obtained with different assay methods or kits cannot be used interchangeably.
Serum HER-2/neu levels may not always indicate the presence or absence of malignant disease. The HER-2/neu value should be used as part of an overall clinical assessment that includes additional clinical evaluation and diagnostic tests. In metastatic breast cancer cases, 92% of patients having serum HER-2/neu of 37 µg/L or greater are tissue HER-2 positive, whereas only 27% of patients having values less than 37 µg/L are tissue HER-2 positive. |
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