Which measurement is commonly used to assess subcutaneous fat in nutrition assessments?

• A. Tricep skinfold thickness
• B. Systolic blood pressure
• C. Serum glucose
• D. Height

Answer: (A)

Subcutaneous fat is commonly assessed with skinfold measurements, with tricep skinfold thickness being a widely used site. Using a caliper, a technician pinches a fold of skin and subcutaneous fat at the back of the upper arm and measures its thickness in millimeters. When multiple sites are measured and fed into validated equations, this provides an estimate of total body fat and helps monitor changes over time. It’s practical in nutrition assessments because it’s quick, inexpensive, noninvasive, and repeatable when technique and landmarks are consistent. Proper technique matters, since excess muscle, skin elasticity, or inconsistent pinch can affect accuracy. Other options don’t measure fat directly: systolic blood pressure reflects cardiovascular status, serum glucose measures carbohydrate metabolism, and height reflects stature.