1. Of-glucose
2. Of Glucose
3. Preparation For Fasting Glucose Test
4. How Long To Fast Before Glucose Test
5. Name Of Glucose Test

The oxidative-fermentative (OF) test was developed by Hugh and Leifson in 1953. They developed OF media to differentiate between oxidative bacteria (that produces acid from carbohydrates under aerobic condition only) and fermentative bacteria (that produces acid both under aerobic and anaerobic conditions). Currently, a person is diagnosed with diabetes if his plasma glucose level is 200 mg/dl or higher two hours after ingesting the glucose. Those with a plasma glucose level less than 200 mg/dl but greater than or equal to 140 mg/dl are diagnosed with a condition called impaired glucose tolerance, or prediabetes.

Many types of glucose tests exist and they can be used to estimate blood sugar levels at a given time or, over a longer period of time, to obtain average levels or to see how fast body is able to normalize changed glucose levels. Eating food for example leads to elevated blood sugar levels. In healthy people these levels quickly return to normal via increased cellular glucose uptake which is primarily mediated by increase in blood insulin levels.

Glucose tests can reveal temporary/long-term hyperglycemia or hypoglycemia. These conditions may not have obvious symptoms and can damage organs in the long-term. Abnormally high/low levels, slow return to normal levels from either of these conditions and/or inability to normalize blood sugar levels means that the person being tested probably has some kind of medical condition like type 2 diabetes which is caused by cellular insensitivity to insulin. Glucose tests are thus often used to diagnose such conditions.

Testing methods[edit]

Tests that can be performed at home are used in blood glucose monitoring for illnesses that have already been diagnosed medically so that these illnesses can be maintained via medication and meal timing. Some of the home testing methods include^{[citation needed]}

• fingerprick type of glucose meter - need to prick self finger 8-12 times a day.
• continuous glucose monitor - the CGM monitors the glucose levels every 5 minutes approximately.

Laboratory tests are often used to diagnose illnesses and such methods include

• fasting blood sugar (FBS), fasting plasma glucose (FPG): 10–16 hours after eating^[1]
• glucose tolerance test:^[2] continuous testing
• postprandial glucose test (PC): 2 hours after eating^[1]

Some laboratory tests don't measure glucose levels directly from body fluids or tissues but still indicate elevated blood sugar levels. Such tests measure the levels of glycated hemoglobin, other glycated proteins, 1,5-anhydroglucitol etc. from blood.^[1]

Use in medical diagnosis[edit]

Glucose testing can be used to diagnose or indicate certain medical conditions.

High blood sugar may indicate

• gestational diabetes. This temporary form of diabetes appears during pregnancy, and with glucose-controlling medication or insulin symptoms can be improved.^[3]
• type 1 and type 2 diabetes or prediabetes. If diagnosed with diabetes, regular glucose tests can help manage or maintain conditions. Type 1, is commonly seen in children or teenagers whose bodies are not producing enough insulin. Type 2 diabetes, is typically seen in adults who are overweight. The insulin in their bodies are either not working normally, or there is not being enough produced.^[4]
• pancreatic cancer^[4]
• pancreatitis^[4]
• underactive thyroid^[4]

Low blood sugar may indicate

• insulin overuse^[4]
• starvation^[4]
• underactive thyroid^[4]
• Addison's disease^[4]
• insulinoma^[4]
• kidney disease^[4]

Of-glucose

Preparing for testing[edit]

Fasting prior to glucose testing may be required with some test types. Fasting blood sugar test, for example, requires 10–16 hour-long period of not eating before the test.^[1]

Blood sugar levels can be affected by some drugs and prior to some glucose tests these medications should be temporarily given up or their dosages should be decreased. Such drugs may include salicylates (Aspirin), birth control pills, corticosteroids, tricyclic antidepressants, lithium, diuretics and phenytoin.^[4]

Some foods contain caffeine (coffee, tea, colas, energy drinks etc.). Blood sugar levels of healthy people are generally not significantly changed by caffeine, but in diabetics caffeine intake may elevate these levels via its ability to stimulate the adrenergic nervous system.^[5]

Reference ranges[edit]

Fasting blood sugar[edit]

A level below 5.6 mmol/l (100 mg/dl) 10–16 hours without eating is normal. 5.6–6 mmol/l (100–109 mg/dl) may indicate prediabetes and oral glucose tolerance test (OGTT) should be done for high-risk individuals (old people, those with high blood pressure etc.). 6.1–6.9 mmol/l (110–125 mg/dl) means OGTT should be done even if other indicators of diabetes are not present. 7 mmol/l (126 mg/dl) and above indicates diabetes and the fasting test should be repeated.^[6]

Glucose tolerance test[edit]

Postprandial glucose test[edit]

Random glucose test[edit]

Of Glucose

See also[edit]

Preparation For Fasting Glucose Test

References[edit]

How Long To Fast Before Glucose Test

1. ^ ^abcdKhatib, Oussama MN (2006). Guidelines for the prevention, management and care of diabetes mellitus. World Health Organization, Regional Office for the Eastern Mediterranean. pp. 30, 37. ISBN9789290214045. OCLC76821700.
2. ^MedlinePlus Encyclopedia: Glucose tolerance test
3. ^'Is the glucose test during pregnancy optional? - Today's Parent'. Today's Parent. 2017-08-30. Retrieved 2018-05-05.
4. ^ ^abcdefghijk'Blood Glucose Test: Preparation, Procedure, and More'. Healthline. Retrieved 2018-05-05.
5. ^'How Does Coffee Affect Your Blood Sugar?'. WebMD. Retrieved 2018-08-30.
6. ^Diabetes – tests and diagnosis

Name Of Glucose Test