C3 NEPHRITIC FACTOR

test app

TEST NAME: C3 NEPHRITIC FACTOR

LAB DEPT: Core Lab Sendouts

SPECIMEN REQUIREMENTS

Specimen Type:	Blood
Container/Tube
Preferred/Acceptable:	Plain, Red-top Vacutainer®.
Collection Volume:	1.0 mL (minimum 0.6 mL)
Patient Preparation:	None
Sample Rejection:	Specimens collected in gel tubes. Mislabeled or unlabeled specimens.
Special Instructions:	Send a completed "Advanced Diagnostic Laboratories National Jewish Health, Complement Testing" requisition with specimen.

LOGISTICS

Test Availability:	Daily
Turnaround Time:	14 days
Test set-up:	Tuesday
Lab Testing Section:	Send-outs
Referred to:	National Jewish Health / Test ID: C3NF

INTERPRETIVE

Reference Range:	Normal: 0.00-0.26 Equivocal: 0.27-0.33 Positive: >0.34
Critical Values:	None established
Limitations:	This is not a direct measurement of antibody quality, but only a qualitative (indirect) measure of its activity in causing C3 conversion.
Methodology:	Immunofixation Electrophoresis

ADDITIONAL INFORMATION

For SLCH Laboratory use only

Lab Processing instructions:	Allow blood to clot at room temp (37ºC) for 20-60 minutes. Centrifuge specimen to separate and immediately transfer serum to a 5 mL screw-cap, plastic vial. Place transport vial in dry ice to freeze immediately.
Processed Volume:	0.5 mL (minimum 0.3 mL) serum
Transport Temperature:	Frozen
Analyte Stability:	PROCESSED: Ambient: NA Refrigerated: NA Frozen: (@-70°C): 1 year
Notes:	Send specimen frozen on dry ice to NJCL by overnight express Monday-Thursday only. Include completed "Advanced Diagnostic Laboratories National Jewish Health, Complement Lab" requisition with specimen. Keep specimen frozen at -70°C if received after pick-up Mon-Thurs and anytime Fri-Sun. Cancel if received in serum gel tube.

GENERAL INFORMATION

EPIC order name:	Miscellaneous Lab Test
Cerner order name:	Misc Ref SLC
CPT Codes:	86161
LOINC Value:	NA
Synonyms:	2-D Immunoelectrophoresis
Last Updated: 09/20
Last Reviewed: 12/23