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Body Surface Area (BSA) estimates the total surface area of the human body (m²), widely used to determine medication dosages — especially chemotherapy — and assess physiological functions.
Unit
Body Surface Area (BSA Calculator) is a medical measurement used to estimate the total surface area of the human body, expressed in square meters (m²). It is widely used in healthcare to determine correct medication dosages—especially in chemotherapy—and to assess various physiological functions.
BSA Categories (approximate ranges for adults, may vary by context):
Low BSA: Less than 1.5 m² (highlighted in orange) – May indicate undernutrition or small body size.
Normal BSA: 1.5 m² to 2.0 m² (highlighted in green) – Typical range for most adults.
High BSA: Above 2.0 m² (highlighted in orange) – Often linked to larger body size or overweight.
Very High BSA: Above 2.5 m² (highlighted in red) – May require special medication dosing considerations.
While BSA offers a more precise basis for certain medical calculations than weight alone, it does not account for body composition or fat distribution.
