skip navigation
A B C D E F G H I J K L M N O P Q

Test Identifier Information

 
Registration CodePCYS
Method


Immunoassay on Siemens BNII nephelometer.

Diagnostic Use / Indications

Cystatin C is used as a measure of glomerular filtration rate (GFR) in patients where creatinine results may be misleading, such as:

  • People with abnormally low or abnormally high muscle mass
  • Obese patients
  • Malnourished patients 
  • Children. 

NOTE: This test is considerably more expensive than creatinine, therefore use should be exercised judiciously. Consider using Creatinine Clearance unless use is justifiable.

External Price$10.88(Exclusive of GST)
  

Specimen Collection

 
Patient Specimen5mL Plain tube(Red) - 5mL Heparin(Green)
  

Instructions for Referral to CHLabs

 
Aliquot InstructionsMinimum 0.2mL, Preferred >0.5 mL serum or heparinised plasma. Samples are stable at 2-8 C for up to 7 days but can be frozen (up to 3 months) if transport is not going to occur within this timeframe.
Aliquot Transport to CHLRefrigerated preferred
  

CHLabs Laboratory

 
DepartmentBiochemistry - Protein Laboratory
Contact Details Email Email
This e-mail address is being protected from spam bots, you need JavaScript enabled to view it
Contact Phone Number(03)3640334 | x80334
Test AvailabilityTwice weekly
Turnaround Time1-4 days
Reference Interval

Adults Reference interval: 0.62 - 1.11 mg/L

 

 

 

Interpretation

Cystatin C is freely filtered in the renal glomeruli and is normally re-absorbed in the proximal tubules where it is nearly completely metabolised, leading to insignificant levels in the urine. The proportion of cystatin C found in the serum is inversely proportional to the glomerular filtration rate and is uanaffected by:

  • Infection
  • Inflammation
  • Neoplasia
  • Body mass
  • Diet
  • Drugs.
Delphic Number Test Number8675

CHL Follow us on Facebook