Assessment: Anthropometrics/Medical Tests Box 4.6 Laboratory Test: Calcium
• Serum calcium levels are tied to albumin levels, not to dietary calcium intake.
• Above-normal calcium results from hyperparathyroidism and bone cancer.
• Below-normal calcium results from malnutrition; alcohol- ism; magnesium deficiency; vitamin D deficiency; and hypoparathyroidism.
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Box 4.7 Laboratory Test: Complement C3
• Complement C3 is a sensitive indicator of nutritional status. • Above-normal complement C3 results from cancer and ulcerative colitis.
• Below-normal complement C3 results from malnutrition, cirrhosis, hepatitis, chronic infections, and lupus.
Box 4.8 Laboratory Test: Creatinine
• Creatinine is an indicator of kidney function, which can be compromised in severe cases of eating disorders.
• Above-normal creatinine results from dehydration; muscle injury; impaired kidney function (can be caused by drug abuse); kidney stones; urinary tract obstruction; decreased blood flow to the kidneys due to shock; congestive heart failure; atherosclerosis; and complications of diabetes.
• Below-normal creatinine results from muscle wasting and pregnancy.
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