How would one test the amount of visceral fat in ones body? are there guidelines to this metric?

Can check waist circ: Checking one's waist circumference can estimate one's visceral fat so that he can take action to improve health. Increased Risk of obesity-related disorders occurs if: Man's WC 37 up to 40 inches (94 up to 102 cm), Woman's WC 31.5 up to 35 inches (80 up to 88 cm); Asian man's WC 35.5 up to ~100 inches, Asian woman's WC 31.5 up to ~35 inches.