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CYSTATIN C W/EGFR: A Comprehensive Guide for Patients
Introduction
The CYSTATIN C W/EGFR test is a valuable tool in medical diagnostics, providing insights into kidney function and lung cancer characteristics. It measures the levels of cystatin C and epidermal growth factor receptor (EGFR) in the blood, aiding in the assessment of kidney health and guiding lung cancer treatment.
Test Overview
Cystatin C:
Cystatin C is a protein produced by all cells, with higher levels indicating decreased kidney function. This test helps evaluate kidney health and detect early signs of kidney disease.
EGFR:
EGFR is a protein expressed on the surface of cells, particularly in lung cancer cells. The test detects mutations in the EGFR gene, which can influence lung cancer treatment decisions.
Conditions and Diseases Detected
Kidney Function:
- Decreased kidney function
- Chronic kidney disease (CKD)
- Acute kidney injury
Lung Cancer:
- Determine the effectiveness of certain lung cancer therapies, such as tyrosine kinase inhibitors (TKIs)
- Guide treatment selection and improve patient outcomes
Preparation Guidelines
- Fasting: Typically, fasting for 12 hours is required.
- Hydration: Drink plenty of water to stay hydrated.
- Medications: Inform your doctor about all medications you are taking.
Procedure
The test involves a simple blood draw from a vein in your arm. It is a quick and painless procedure.
Duration and Waiting Time
- The test usually takes a few minutes.
- Results are typically available within a few days.
Additional Tests
The CYSTATIN C W/EGFR test may be performed alongside other tests for a more comprehensive assessment of kidney and lung health, such as:
- Creatinine
- Blood urea nitrogen (BUN)
- Kidney ultrasound
- Chest X-ray
Conclusion
Your healthcare provider may recommend a CYSTATIN C W/EGFR test if you experience symptoms of kidney disease or lung cancer. The test can detect abnormalities in kidney function and identify EGFR mutations that influence cancer treatment options. It is essential to discuss the results with your doctor to determine the appropriate course of action. Remember, early detection and appropriate treatment can significantly improve health outcomes.
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