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Factor B

Order Code: 1503

Test Information

Reduced Factor B levels are indicative of alternate pathway activation in complement-mediated diseases, including aHUS.

Sample Requirements

Serum (Red Top - no serum separator)

Additional Sample Requirements

Sample should be spun down, taken off the clot, and frozen within 2 hours of draw. Send on dry ice. Frozen serum stable up to 6 months. Avoid freeze/thaw cycles.

Shipping Information


Requested Volume

Two 2 ml aliquots

Minimum/Pediatric Volume

One 2 ml aliquot

CPT Codes




Turnaround Time

7-10 days

This test is performed at Cincinnati Children's Hospital and Medical Center


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