Tests to be Conducted After an Absolute 12-Hour Fast:
Unless in mandatory situations, it is recommended that samples for all biochemical tests be taken after a 12-hour fast.
Tests that Must Be Conducted After an Absolute 12-Hour Fast:
Alkaline Phosphatase |
Calcitonin |
Alkaline Phosphatase Isoenzymes |
Cholesterol (total, LDL, HDL, VLDL) |
Beta-CrossLaps (Beta-CTx) |
Cortisol |
Growth Hormone (GH) |
Lipoprotein (a) |
C-Peptide |
Osteocalcin |
Zinc |
Parathyroid Hormone (PTH) |
Iron |
Potassium |
Folic Acid |
Bile Acids |
Phosphorus |
Free Fatty Acids (FFA) |
Gastrin |
Triglycerides |
Glucose |
Vitamin B12 |
Homocysteine |
Vitamin D (25-Hydroxy Vitamin D) |
Insulin |
Vitamin D3 (1,25-Dihydroxy Vitamin D3) |
Urea |
Vitamin E |
Breath Test |
|
Hormone Tests with Rhythmic Secretion and Changing Levels Throughout the Day |
Cortisol |
Thyroid Hormones |
ACTH |
Insulin |
Prolactin |
|