Why my blood tests show high blood glucose levels (hyperglycemia)?

It is a common question by any one went to the medical lab and tests a blood sample for his glucose and get lab results with elevated levels in blood sugar, other questions will be in mind may be:
Is high glucose level is caused by disease?
Am I in trouble get my lab test results high in glucose?
I am not a patient and don’t suffer from any disease, why my blood glucose level is high?
Is high glucose in blood will last for long or will be normal shortly?

What does blood glucose test means?
Blood glucose test is a common lab test and may be carried to patient at any time of the day and reported as random blood sugar levels in blood, if the RBG test shows high results it is recommended to carry out fasting blood sugar test (FBG) after six hours fasting, and glucose test after two hours postprandial test

What is glucose in my blood?
Glucose is the a mono-saccharides in blood, glucose in our body gives bio-energy to muscles and brain and other tissues to do their function, without cellular glucose; cells cannot peroform daily work and have no potential to to works.

  • What does it meant by hyperglycemic person?

Hyperglycemia is a medical condition means that glucose concentration in blood is out the standard range which usually not above 150 mg/dl at any time of the day except in fasting condition may be low up to 110 mg/dl or even low to 70 mg/dl, other than normal ranger mentioned are considered as abnormal blood glucose test results and should be medicated as doctors recommend.

  • What is the common symptoms of high blood glucose levels?

List of common symptoms in diabetic patients are:
Dry mouth
Frequent urination
Urination during the night
Blurry vision
Dry, itchy skin
Fatigue or drowsiness
Weight loss
Increased appetite

What is the normal blood glucose level?
Standard glucose levels in healthy people should not exceeds 150 mg/dl in random time, and 120 mg/dl in fasting condition, as well as not above 140 after two hours post prandial test, show interpretation of normal ranges.

When my blood glucose results is in critical values?
Most medical laboratories determine its critical limits, the most convention limits is:
Random blood glucose critical limit is 500 mg/dl, which means massive concentration of glucose in the blood and require fast care.
Fasting blood glucose level which require medical decision limit is 130 mg/dl

What should I do when my blood glucose result is?
Serum FBG: 127 mg/dl
Serum 2H PPG: 210 mg/dl
The answer is: this limit require your doctor to take the medication decision and start stop raise in sugar level in your blood but this results is not critical and cannot interpreted as you are a diabetic patient at all.

What I have to do, my glucose test results are above 500 mg/dl?
If you have not eaten a meal rich in fat and sugars greedily, this level is a critical level in the blood should act quickly to reduce the level of sugar in the blood to normal level quickly so as not to affect high blood sugar in the body’s vital functions

My doctor said that my diabetes is of second type, what does this means?
First type diabetes mellitus is medical condition in which the highness of blood glucose level due to no insulin in the blood due to tumor of insulin cells in pancreas or high glucose levels due to insufficient amount of insulin enters blood stream in appropriate time, lab test results in this case should be higher than 500 mg/dl in patient‘s serum and (+++) in urinary glucose test by strep and ketones appear.

Second type of diabetes mellitus is the medical condition in which high glucose level is because of laziness cells or weakness of insulin receptors on the surfaces of cells, in spite of the presence of insulin, the body is unable to utilize it to convert sugar into energy in cells, lab test results for second type of diabetes mellitus  should not show acetone or other ketones and no certain level take as evidence of this type.

I have high glucose level in my urine while the blood glucose level is in normal range, what does it means?
This is a medical condition, kidney’s absorption threshold may be factor in showing such glucose results, but many cases have medically reported especially in pregnant women which called gestational diabetes, or people with low kidney’s threshold of absorption, and another example is hereditary conditions.

Recommendations by doctors for who have high blood glucose levels:

  1. Results bit high, cannot told as diabetic disease and should be repeated or carry out fasting blood glucose test in addition to glucose test after 2H after meal,
  2. If it is high too, so that your are diabetic and should take blood sample tested for HBA1C test which determines the accumulated glucose levels in blood through past three months, to know if the case of casual or you are already diabetic patient since the period is equal to or greater than 3 months. 
  3. Note that: repeated high glucose in the blood may cause nephritis and/or anemia due to loss of fluids through excessive urination.
  4. Carry out general health checkup test available in medical labs to predict the reasons and risk factors of hyperglycemia.

Dr.Megan Ralf

A Medical laboratory Scientist who devoted his life to medical and laboratory sciences, writes his everyday expertise dealing with various pathological conditions through laboratory diagnosis of different body fluids, also participating in many workshops for first aids, infection control, and urgent care. Also Dr Megan Ralf coaching many medical teams.

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