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Test Code F H Ab Factor H Autoantibody Testing

Important Note

Draw blood in a plain, red-top tube. Gel separator is unacceptable.

Clinical System Name

Factor H Autoantibody Testing


Atypical HUS
F H Autoantibody

Factor H Antibody
Hemolytic -Uremic Syndrome, Atypical
HUS, Atypical

Sample Requirements

Specimen: Whole Blood

Container(s): Red

Preferred Vol: 10.0 mL

Minimum Vol: 4.0 mL


Note: Draw blood in a plain, red-top tube. Gel separator is unacceptable.

Processing Instructions

Reject due to: Gold/SST or Hemolysis

Spin: Y

Aliquot: Y

Temp: -70 C

Storage Location: Allow blood to clot at room temp. Spin after roughly 30 min (or when blood is clotted). Aliquot 2.0 - 5.0 mL serum into two plastic tubes affixed with a large Cerner label. Place samples in the CPA -70 freezer, Send Outs rack.


Off-site Collection:


STAT Performed TAT
N Collected daily 1 m


Performing Laboratory

The University of Iowa

Molecular Otolaryngology & Renal Research Laboratories (MORL)

285 Newton Rd, 5270 CBRB

Iowa City, IA 52242-1078


Phone: (319)-335-6623


Department: Send Outs

Phone Number: (206) 987-2563



Reference Range

Interpretive report provided.


Method: ELISA

Analytical Volume: None specified


CPT Codes

83516 (x18)

Send Out Instructions

Reference Test Name: Factor H Autoantibody Testing
Reference Test Number: FH AutoAb
Instructions: Ship frozen on dry ice overnight via FedEx to the University of Iowa..