s syndrome, severe liver or
kidney disease, depression, hyperthyroidism, obesity, recent surgery, illness, injury, or whole body infection (sepsis).
What affects 24 hour UFC: having physical or emotional stress; pregnancy; low blood sugar (hypoglycemia); eating, drinking, or exercising before the test; taking medicines eg: estrogen, amphetamines, corticosteroids; not collecting exactly 24 hours of urine.