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What is your interpretation of my blood glucose numbers?
FPG = 126
OGTT = 86
These were taken by glucometer during a class lab (I'm a med student) and I didn't have the nerve to ask the professor about it. The FPG was taken after about a 2-3 hour fast, I ate two cookies and took the "OGTT" about 20 minutes later (I know not exactly a well controlled study).
But what about that fasting glucose? 126, technically, meets one of the criteria for DM. At about 120+ the incidence of retinopathy begins to skyrocket (particularly in certain ethnicities). I am a lean male in my 20s with no past history of anything. What could explain the high glucose? And is that a risk factor for DM-like complications (vascular, renal, eyes) even if it's NOT due to any DM-type insulin resistance or deficiency?
7 Answers
- Gary BLv 79 years agoFavorite Answer
a 126 meets ONE of the criteria.
Here are the REST:
"A person who has two Fasting Blood Glucose levels above 120 on two consecutive days should be considered a candidate for Diabtes Mellitus"
SO:
you MUST take the FASTING Blood Glucose Test. Fasting is defined as EIGHT HOURS or more with NO FOOD and ONLY water to drink.
Your 2-3 hour fast DOES NOT FIT THE CRITERIA!!!
You need to take TWO such tests on two DIFFERENT days. You took ONLY ONE. YOU DID NOT MEET THE CRITERIA!!!!
ANY other tests you took are absolutely meaningless to anyone but a doctor. Theya re used for daily control, but NOT DIAGNOSIS. They can be safetly ignored at this time.
Now, had you followed proper procedure for Diabetes Diagnosis, and taken two PROPERLY timed FBG tests, even if they were HIGH you are only a CANDIDATE for DM. At this point the doctor takes further tests, including urine samples, and workups for liver and kidney enzymes, for further clues to make a conclusive diagnosis. One such test would be the Timed Glucose Test, where you drink a pint of super-sweet liquid, and your bloood is drawn every 30 minutes for about 4 hours. This plots your body's RESPONSE to glucose, which is a rather definitive test for Diabetes.
But Medical Science marches onward!!! There is now a test called the HbA1C test. This test takes a 90 days average of ALL you daily BG readings, Since the results are a 90 day average, no fasting is needed. The test is not screwed up if you eat before taking the test, and you cannot "fool it" by eating "healthy" for a couple of days before the test.
The A1C test is the Gold Standard for Diabetes Diagnosis. The FBG test is now considered OUT of diagnosis and is used only as a way for the diagnosesddiabetics to help control their blood sugar on a daily, meal-by-meal basis.
If you are REALLY concerned, go have the A1C test done by a local physician.
But frankly, >I< don't think there is anything wrong, and it DOES NOT appear that you have diabetes.
- Cardinal FangLv 59 years ago
First of all - what is the reference range? Without knowing what the reference range is, numbers are meaningless. It might be that with that method, 126 is within normal range.
Secondly, blood results should always and only be interpreted in line with other clinical information - say from examination. Basing something soley on a single stand alone blood result can be dangerous - I would hope that they teach that in med school. Do you have any other DM symptoms e.g. thirst, polyuria or tiredness?
Thirdly 2-3 hours does not constitute a fast. Normal advice from most labs is to fast for 12 hours (although some will say 8 hours). Your glucose level could charitably be called a random glucose sample. A raised Random glucose level has to hit a lot higher level before it can be factored in as indicative of DM.
Fourthly - measuring blood 20 minutes after eating cookies won't indicate anything either as there will have been no time for the cookies to be digested and absorbed. A normal OGTT involves taking a fasting sample (taken after a 12 hour fast) then a high sugar drink is given - glucola or lucozade for example. A second blood sample is take 2 hours after the sugar challege is given.
Lastly, we know nothing about the analyser - was it working properly? Did it have a valid calibration and QC? Could there be contamination? Could the result be a flyer (an erroneous result not representative of an accurate reading)?
Having said all of that - if you're at all worried go and see your GP or family doctor and get checked out properly. At least then you'll know for sure
Source(s): Hospital lab rat - How do you think about the answers? You can sign in to vote the answer.
- Ben TrolledLv 79 years ago
Normal Fasting Blood Sugar
A normal fasting blood sugar (which is also the blood sugar a normal person will see right before a meal) is:
83 mg/dl (4.6 mmol/L) or less.
Many normal people have fasting blood sugars in the mid and high 70 mg/dl (3.9 mmol/L) range.
Though most doctors will tell you any fasting blood sugar under 100 mg/dl (5.6 mmol/L) is "normal", there are several studies that suggest that testing with a fasting blood sugar in the mid 90 mg/dl (5 mmol/L) range often predicts diabetes that is diagnosed a decade later.
Post-Meal Blood Sugar (Postprandial)
Independent of what they eat, the blood sugar of a truly normal person is:
Under 120 mg/dl (6.6 mmol/L) one or two hours after a meal.
Most normal people are under 100 mg/dl (5.5 mmol/L) two hours after eating.
It seem that you may be a little high, but hard to tell with your timing being a little sketchy..
You aren't trying to trick us , are you? Seems a med. student would have access to many book that would explain this..
Besides a fasting test is at least 8 hour from the last time you ate.
and for a OGGT test , a simulation would be best done with a large bagel..
Take care
Ben Trolled
- John WLv 79 years ago
It's not fasting till it's 8 hours after having food. An OGTT is at least two readings, one a fasting reading after an 8 hour fast and the second a postprandial, two hours after eating 75 grams of glucose. Can't really say anything about your readings as you clearly didn't even get them right and obviously you don't even know the meaning of the terms.
- Anurag CLv 69 years ago
fasting must be less than 100 and after meal should be 150 or less but dont worry test sometime may be gone wrong so test again in medical science a wrong diagnose could lead to death as happen in case of brain hemorrhage of my uncle in some one marriage ceremony he ate to many sweats and than fainted and fell down on ground some rushed him to hospital emergency where idiots without checking blood sugar think low blood sugar put him on glucose that instantly worsen his condition and cause arterial damage in brain causing brain hemorrhage .after such incidents state govt provide handy glucose meter in emergency to check before giving glucose