Precautions for measuring cystatin C

Cystatin C is a sensitive indicator that reflects changes in glomerular filtration rate and can be used to evaluate renal function. The precautions for measuring cystatin C include:

1. Specimen requirements: Venous blood should be drawn on an empty stomach, preferably in the morning on an empty stomach.

2. Sample preservation: The specimen should be sent for testing as soon as possible and stored at 4-8 ℃ for no more than 4 hours.

3. Detection method: Enzyme method or immunoturbidimetric method may be used for measurement, and different methods may have certain differences.

4. Interference factors: Certain drugs or physiological factors may affect the measurement results, such as hyperlipidemia, abnormal liver function, etc.

5. Reference range: Different instruments and methods may have different reference ranges, and judgments should be made based on the reference range of local laboratories.

The above content is for reference only. If you need to perform cystatin C testing, please follow the guidance of a doctor or professional.