CYSTATIN C

test app

TEST NAME: CYSTATIN C

LAB DEPT: Core Lab Chemistry

SPECIMEN REQUIREMENTS

Specimen Type:	Blood
Container/Tube
Preferred:	Light green-top (lithium heparin) Vacutainer®
Acceptable:	green SAMPLETTE™/MICROTAINER®, plain red-top vacutainer ®, or Gold/Red SST gel vacutainer®
Collection Volume:	2.0 mL (minimum 0.6 mL)
Patient Preparation:	None
Sample Rejection	Specimens collected by capillary method. Mislabeled or unlabeled specimens.
Special Instructions:	Send to lab promptly.

LOGISTICS

Test Availability:	Monday-Sunday
Cut-off time:	None; performed as received
Turnaround Time:	Same day; 2 hours from receipt in lab
Lab Testing Section:	Chemistry

INTERPRETIVE

Reference Range:	<1 month:	1.00-3.00 mg/L
	1-6 months:	1.00-2.00 mg/L
	6 months-1 year:	0.70-1.50 mg/L
	> or = 1 year:	0.60-1.20 mg/L
	Interpretive data: Cystatin C concentrations vary widely in the first month of life, particularly in pre-term infants. Concentrations gradually diminish to adult levels by 1 year of life. Concentrations tend to rise with diminishing renal function in individuals greater than 60 years of age.
Critical Values:	None established
Limitations:	NA
Methodology:	Particle Inhanced Immunoturbidimetric
Test Classification:	This test has been cleared or approved by the U.S. Food and Drug Administration and is used per manufacturer's instructions

ADDITIONAL INFORMATION

For SLCH Laboratory use only

Lab Processing instructions:	Centrifuge specimen to separate. If specimen is collected in microtainer or plain, red-top tube aliquot sample into a conical tube for testing (labeling aliquot with specimen type).
Processed Volume:	minimum 0.3 mL plasma/serum
Analyte Stability:	Ambient (unprocessed): NA PROCESSED: Ambient: 7 days Refrigerated: 7 days Frozen: 6 months
Notes:	Will also accept EDTA plasma

GENERAL INFORMATION

EPIC order name:	Cystatin C (EPIC Test# LAB5168)
Cerner order name:	Cystatin C
CPT Codes:	82610
LOINC Value:	33863-2
Synonyms:
Last Updated: 10/24
Last Reviewed: 10/24