Overview of Glucose - Postprandial Blood
What is Glucose - Postprandial Blood?
Preparation for Glucose - Postprandial Blood
- Blood sample is to be given 2 hours after the start of the meal.
Why Get Tested for Glucose - Postprandial Blood?
The Blood Glucose Postprandial (PP) Blood Glucose Test is performed:
· To Screen for high blood sugar in presence of risk factors of Diabetes
· To monitor treatment efficacy in patients undergoing treatment for Diabetes
· As a part of a routine preventive health checkup
Understand more about Glucose - Postprandial Blood
Glucose is a simple sugar or monosaccharide which is the main source of energy for all the cells of the body, and the only energy source for the nervous system. Carbohydrates consumed in the diet are broken down in the body to their simplest form- glucose, which is absorbed by the intestines and transported by the blood to various organs. Glucose is subsequently utilized by cells of these organs to produce energy wherever necessary, and the excess is stored either as glycogen in the liver for short-term storage or in fat tissues as triglycerides for long-term storage. The uptake, utilization, and storage of glucose after it is absorbed in the intestines are facilitated by the hormone- insulin secreted by the pancreas. Insulin influences the transport of glucose to the organs requiring it, like the heart, brain, working muscles, etc. It also directs storage of excess glucose. The action of insulin reduces sugar levels in the blood.
After a meal, sugar levels increase in blood and insulin is secreted in response to reduce sugar levels until it becomes normal. If glucose levels fall too low in blood, another pancreatic hormone called glucagon is released, which directs the liver to convert stored glycogen into glucose and release it into the blood. The insulin and glucagon hormones create a feedback mechanism to keep blood glucose levels within the normal range. Imbalance in their activity causes high or low blood sugar levels in the blood.
The Blood Glucose Postprandial (PP) Test measures the glucose levels in the blood after a period of 2 hours from the start of last meal. The Blood Glucose PP test is usually done along with a Fasting Blood Glucose test.
This helps to determine if the body is able to utilize or store glucose efficiently. Excess sugar in blood indicates it is not being utilized or stored. This is principally caused due to Diabetes which can be of two types Type 1 or Type 2. Type 1 Diabetes is caused when insulin is not produced or produced in very little quantity. Type 2 Diabetes is caused when insulin produced is not utilized effectively by the body (Insulin resistance) and also due to decreased insulin production. In both these cases, blood sugar level rises, while cells are deprived of nutrition.
What Results of Glucose - Postprandial Blood mean?
Normal: under 140 mg/dl (7.8 mmol/l)
Impaired glucose tolerance or Pre-diabetes: between 140 and 200 mg/dl (7.8 and 11.1 mmol/l)
Diabetes: equal to or above 200 mg/dl (11.1 mmol/l)
Oral glucose tolerance test is usually recommended when the blood glucose levels fall between 140 and 200 mg/dl.
Patient Concerns about Glucose - Postprandial Blood
Frequently Asked Questions about Glucose - Postprandial Blood