❓ Full Question:

I am currently working on measuring antioxidant enzyme activity—specifically Superoxide Dismutase (SOD) and Catalase (CAT)—from blood samples using spectrophotometric methods.

I am looking for standardized, peer-reviewed protocols or personal lab-validated methods that have been used successfully in experimental or clinical research.

🔍 Specific Information Needed:

  • Reagent composition and preparation for both SOD and Catalase assays
  • Sample processing steps – including hemolysate preparation or plasma separation
  • Wavelengths and spectrophotometric settings
  • Standardization methods (e.g., using known enzyme concentrations)
  • Common pitfalls or interferences to avoid (e.g., hemoglobin interference, pH sensitivity)
  • 📚 Background:

    • I am using whole blood samples from human subjects.
    • Available equipment includes a UV-Vis spectrophotometer (200–700 nm range).
    • I aim to report enzyme activity in U/mL or U/mg protein.

    🧬 Relevant Tags:

    Antioxidant Assays SOD Assay Catalase Assay Spectrophotometry Blood Biochemistry Enzyme Kinetics Oxidative Stress

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