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HelpTest Code LAB2866 C3 Nephritic Factor
Additional Codes
C3 Neph
Clinical System Name
C3 Nephritic Factor
Synonyms
C3CSA; C3 Nefs; C3Nefs
Sample Requirements
Specimen: Whole Blood
Container(s): Red
Preferred Vol: 6.0 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: CRITICAL FROZEN. Spin blood roughly 30 minutes after collection, transfer 3.0 mL serum (Min. 1.0 mL) to a plastic aliquot tube affixed with large Epic label. Deliver specimen to the CPA -70 freezer, Send Outs rack. Serum should be frozen within ONE hour of blood draw.
Off-Site Collection: Spin blood roughly 30 minutes after collection, transfer 3.0 mL serum (Min. 1.0 mL) to a plastic tube affixed with large Epic label. Freeze at -70 C. Serum should be frozen within ONE hour of blood draw. Transport frozen.
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | 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
Department: Send Outs
Phone Number: (206) 987-2563
CPT Codes
86161, 86235
Methodology
Method: C3 Convertase Stabilizing Assay (C3CSA) measures the ability of C3Nefs to stabilize C3 convertase on sheep erythrocytes. Stabilizing activities are reported as a function of hemolysis at 20 minutes.
Analytical Volume: 1.0 mL Serum
Limitations:
Reference Range
Interpretive report provided.
Send Out Instructions
| Reference Test Name: | C3 Nephritic Factor |
| Reference Lab Test Code: | C3Nef (C3CSA) |
| Instructions: | Ship Monday through Thursday via FedEx Priority Overnight. Saturday deliveries are not accepted. |