91034      C1 Esterase Inhibitor Functional
Specimen:
  Collect: One 7.5 mL SST

Also Acceptable
One 4 mL Lavender (EDTA) 
  Submit: 0.5 mL (Min:0.2 mL) Serum. Submit Frozen. Submit in a Standard Transport Tube.

Also Acceptable
0.5 mL (Min:0.2 mL) Plasma. Submit Frozen. Submit in a Standard Transport Tube. 
  Special Handling: Critical Frozen
Separate from cells ASAP 
  Stability: Ambient: 2 Hour(s); Refrigerated: Unacceptable; Frozen: 2 Week(s); Incubated: Unacceptable 
Methodology: Enzyme-Linked ImmunoSorbent Assay (ELISA) 
Performed: Wednesday, Friday, Sunday 
Reported: 2-5 Day(s) 
CPT Codes:
86161 - Complement Functional
Interpretive Data:
>= 68%: Normal
41-67%: Indeterminate
<= 40%: Abnormal