It's based on the level of blood glucose, also known as blood sugar, when you have fasted (which means you haven't eaten any food overnight). Your doctor will test your blood glucose in the office. If it is below 100 milligrams of glucose per deciliter of blood (mg/dL), it is normal.
Protein digestion begins in the stomach, chiefly with the action of the hydrochloric acid that is produced there, and by the enzyme called pepsin (PEP-sin). Some seven or moreâ¦ factors influence how fast the enzymes act on the protein.
The enzymes that are secreted in the stomach are called gastric enzymes. The stomach plays a major role in digestion, both in a mechanical sense by mixing and crushing the food, and also in an enzymatic sense, by digesting it. Pepsin breaks down the protein in the food into smaller particles, such as peptide fragments and amino acids. 2  Protein digestion, therefore, first starts in the stomach, unlike carbohydrate and lipids, which start their digestion in the mouth.