Prolonged fasting affects the following:

Increased:

-48hrs- bilirubin

-72 hrs- TAG, glycerol and FFA but no change in cholesterol after 72 hrs.

Decreased:

-plasma glucose by 45 mg/dL in healthy women

*Hypertriglyceridemia produced by intake of meals is normally cleared 8 hrs. after eating 

• Basal state collection: glucose, chol, triglycerides (TAG) and

electrolytes

• Requires fasting specimen: FBS, GGT, TAG, lipid and lipoprotein test,

gastrin and insulin