Anti-alpha4-integrin inhibitor, Tysabri drug and antibody testing, biological monitoring
18 days
Electrochemiluminescence Immunoassay (ECLIA)
Accredited Laboratory Partner
Contact Technical Support
Measures drug level and antibodies to natalizumab. Used in MS treatment monitoring.
Serum
2 mL
Red-top tube or gel-barrier tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
Allow a minimum clotting time of 30 to 60 minutes with serum separation within 2 hours of collection. Send serum in a plastic transport tube. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
| Temperature | Period |
|---|---|
| Room temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 14 days |
| Freeze/thaw cycles | stable x6 |
Anti-alpha4-integrin inhibitor, Tysabri drug and antibody testing, biological monitoring
18 days
Electrochemiluminescence Immunoassay (ECLIA)
Accredited Laboratory Partner
Contact Technical Support
Measures drug level and antibodies to natalizumab. Used in MS treatment monitoring.
Serum
2 mL
Red-top tube or gel-barrier tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
Allow a minimum clotting time of 30 to 60 minutes with serum separation within 2 hours of collection. Send serum in a plastic transport tube. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
| Temperature | Period |
|---|---|
| Room temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 14 days |
| Freeze/thaw cycles | stable x6 |