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c4-b1e fraction of complement
Synonyms: C4; Complement C4 
Computer Code: C4
Specimen Collection: 2 mL blood (red or gold top tube). 
Minimum Volume: 2 mL 
Handling Instructions for Offsite Areas: Allow to clot, centrifuge for 20 minutes, refrigerate. Serum must be removed from red top tube. 
Reference Values: 12-51 MG/DL  
Lab Code: SI 
Requisition: SEROL
Test Frequency: Mon-Fri Once/day 
Routine TAT: 1-3 days 
Stat TAT: NA 
CPT Code(s): 86160 
LCD or NCD:  
Methodology Used: 54
See Addendum XVII

Albany Medical Center
43 New Scotland Avenue
Albany, NY, 12208
Date: 12/18/2014
Time: 13:27:05 (24hr)