Melanin Index from Spectrophotometry

Calculate melanin index (MI) from narrow-band reflectance spectrophotometry at 660/880nm to objectively quantify skin pigmentation, monitor vitiligo response, and assess tanning dose-response.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Calculate melanin index (MI) from narrow-band reflectance spectrophotometry at 660/880nm to objectively quantify skin pigmentation, monitor vitiligo response, and assess tanning dose-response

Each component has a specific meaning:

  • Narrow-band reflectance spectrophotometry at 660/880nm — The narrow-band reflectance spectrophotometry at 660/880nm recorded for the scenario being assessed.

Note: Interpret the melanin index result against the thresholds and context described above.

How to Use

Enter the narrow-band reflectance spectrophotometry at 660/880nm for the scenario you are assessing. Calculate melanin index (MI) from narrow-band reflectance spectrophotometry at 660/880nm to objectively quantify skin pigmentation, monitor vitiligo response, and assess tanning dose-response. Use the melanin index result to inform your calculation.

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