The Glucose test is used to detect the glucose levels in the blood. It is recommended for the diagnosis of hypoglycemia, hyperglycemia and diabetes. The people with obesity, high blood pressure, low HDL and high LDL levels, women with history of gestational diabetes and ovarian cancers are considered to be at high risk of developing diabetes and thus the Glucose test is recommended for preliminary screening in such individuals. Individuals who are older than the age of 45 years old are required to get regular glucose test results to monitor their sugar levels. Known diabetics, on the other hand, are required to check their sugar levels at regular intervals during the day and if there are symptoms of hyperglycemia or hypoglycemia.
Symptoms to Watch Out for
Hyperglycemia: Blurry vision, increased thirst and appetite, increased frequency of urination, dry mouth, weakness and fatigability, hot flashes, nausea, shortness of breath, vomiting, paleness, and increased heart rate.
Hypoglycemia: Blurry vision, dizziness, sweating, clamminess of the skin, shaking, tingling of the mouth and tongue, headache, incoordination of movements, changes in mood (irritability, short-tempered, impatience), sleepiness, and increased heart rate.
How to Prepare for a Glucose Test
There are four types of glucose test.
Fasting blood test. You will be ordered to fast, so do not eat anything or drink any liquid at least eight hours prior to the glucose lab test. After fasting, a blood sample will be taken from you and sent to the laboratory for analysis. This is usually performed in the morning.
Random glucose blood tests. A blood sample will also be taken, but no fasting is required. This is performed to see how your body manages the higher level of blood sugar after you have just eaten. This is also done by diabetics to monitor their sugar levels.
Glucose tolerance test. This type of blood test for glucose is typically given to a pregnant woman wherein she is given a very sweet drink that has a measured amount sugar. Readings will be taken through blood samples at the one-, two-, and three-hour mark after drinking the liquid. Fasting is required prior to starting the procedure.
Hemoglobin A1C test. No fasting is required before a blood sample is taken.
What the Results Mean
As for reading the serum glucose test:
You have normal results if your fasting glucose test for diabetes falls between 70 and 100 mg/dL.
The results are normal for random glucose blood test if the value is lower than 125 mg/dL.
For glucose tolerance test, values are normal if your fasting blood sugar falls below 100 mg/dL and below 140 mg/dL after two hours.
For hemoglobin A1C test, if the results give back an A1C level of less than 6.5, then it is normal.
If the fasting glucose blood test value is above the normal value, then you are considered pre-diabetic (100 to 125 mg/dL). You are diabetic if the value is above 126 mg/dL for fasting.
If your random blood sugar test revealed a value of more than 200 mg/dL, then you are diabetic.
A pregnant woman is considered pre-diabetic if the value is between 140 and 199 mg/dL and diabetic if the value is more than 200 mg/dL.
Finally, you are considered pre-diabetic if the values fall between 5.7 and 6.4. If your A1C is more than 6.5, then you are diabetic.
Common Glucose Test Questions
Can I do the blood glucose test at home?
Most blood sugar tests are done in the clinic; however, if you are diabetic, you will be required to purchase your own glucose monitor so you can check your levels at home.
Can urine be used to test glucose in the blood?
In some cases, yes, but this is only typically done to monitor the presence of ketones as well as protein in the urine. For regular checking, this is not often ordered.
What can be done to control diabetes?
Oral medications and insulin injections are prescribed to lower the blood sugar level. Lifestyle changes are also recommended.
Are diabetic educators necessary?
Yes; they can help you recognize the signs and symptoms of hyperglycemia and hypoglycemia. They can also help you from planning your diabetic meals to adjusting your medications.
How can hypoglycemia be diagnosed?
You are considered hypoglycemic if your glucose level is below 40 mg/dL and you are exhibiting hypoglycemic symptoms.
What is the difference between glucose and table sugar?
Table sugar is a combination of fructose as well as glucose, which are both simple sugars. But because the body is using glucose as its primary source of energy, it has become common for blood glucose test to also be called blood sugar test.
LabEspy recommends Ulta Lab Tests, Health Testing Centers, True Health Labs for this test.