Overview
This test assists in the diagnosis of autoimmune myasthenia gravis (MG)
| Test code: | LRP4 CBA |
| Abbreviations: | LRP4 Ab, LRP4 CBA |
| Methodology: | In-house fixed cell-based assay (CBA) |
| Validation: | Research use only (RUO) |
Requirements
| Specimen type: | Serum |
| Minimum volume: | 0.5 mL |
| Preferred volume: | 5 mL |
| Rejection criteria: | Grossly hemolytic, lipemic, or icteric. If the sample arrives at room temperature. |
Our offices are only able to receive samples Mon-Fri, so samples must be shipped Mon-Thur. Samples arriving over the weekend may need to be re-drawn.
Specimen
| Specimen collection: | No patient preparation is required for sample collection. |
| Specimen handling: | Centrifuge SST tubes at 1800 - 2200 x g for 10-15 minutes |
| Specimen stability: | Serum samples may be stored: |
Performance
| Testing frequency: | Once a week (3-day testing procedure) |
| Turnaround time: | 1-3 weeks |
| Reference range: | N/A |
Additional Information
- This test was developed and its performance determined by Neurocode USA Inc. It has not been cleared or approved by the Food and Drug Administration.
- Please indicate if patients are on immunomodulating treatments as these may interfere with testing.
- Causal antibodies cannot be identified in about 10% of MG cases. Therefore, a positive result is specific for the diagnosis of AChR ab myasthenia gravis (MG), but a negative result does not rule out an MG diagnosis.
Order Low-Density Lipoprotein Receptor-Related Protein 4 Antibodies by Fixed Cell-Based Assay (LRP4 CBA) Test
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