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Test Code C5 Neph C5 Nephritic Factor

Important Note

Specimen must be received by the lab within 30 minutes. CPA: Freeze within ONE hour of collection.

Clinical System Name

C5 Nephritic Factor

Sample Requirements

Specimen: Whole Blood

Container(s): Red

Preferred Vol: 6.0 mL

Minimum Vol: 4.0 mL


Note: Draw blood in a Red top tube. Gold/SST (serum separator tubes) are not acceptable.

Processing Instructions

Reject due to: Gold/SST

Spin: Y

Aliquot: Y

Temp: -70 C

Storage Location: CRITICAL FROZEN. Allow blood to clot at room temp. Spin after roughly 30 min (or when blood is clotted). Aliquot serum into a tube affixed with a large Cerner label. Place the sample in the CPA -70 freezer, Send Outs rack.


Off-site collection: See directions above. Transport frozen.


Specimen Type Temperature Time
Serum Room temp Unacceptable
  Refrigerated Unacceptable
  Frozen Y



STAT Performed TAT
N Daily 4 w


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



Analytical Volume: 1.0 mL Serum


Reference Ranges

Interpretive report provided.

CPT Codes

86235, 86161

Send Out Instructions

Reference Test Name C5 Nephritic Factor
Reference Test Code C5Nef (C3CSAP)
Instructions Ship frozen on dry ice overnight via FedEx to the University of Iowa. Saturday deliveries are not acceptable.