Detect antibodies for P/Q type voltage-gated calcium channels. Aid in the evaluation of muscle weakness in the context neuromuscular junction disorder with or without cancer, or the diagnosis of paraneoplastic neurological syndromes.
Plain Red or Serum Separator Tube (SST).
Separate from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.2 mL)
Plasma. CSF. Hemolyzed or grossly lipemic specimens.
After separation from cells: Ambient: 72 hours; Refrigerated: 2 weeks; Frozen: 1 month
Effective November 14, 2011
|Negative||0.0 to 24.5 pmol/L|
|Indeterminate||24.6 to 45.6 pmol/L|
|Positive||45.7 pmol/L or greater|
|Component Test Code*||Component Chart Name||LOINC|
|0092629||P/Q-Type Calcium Channel Antibody||33980-4|
- Lambert Eaton
- P/Q calcium channel
- VGCC Ab