what is the highest blood glucose level can be before it enters the diebetes stage?

That is pretty high. Go to a doctor and they will be able to test your blood sugar.

You are one point over the line, my friend!!

Make an appointment with your doctor for complete annual physical with blood draws to check for sure.

But you do not say what time of the day this was or how long after you had eaten. Any glucose over 150 random any time of the day even soon after eating, is diabetes. 126 fasting or 2 hours after first bite of food is diabetes.

Anything over 125 fasting, is considered diabetic. Anything over 180 to 200 after a meal is considered diabetic. l am diabetic and rarely go over 120. meal or no meal. You should seriously consider getting on a diet and exercise program similar to the one Mr. Peachy recommends.

You are not saying if you took your test pre or post meal. If it is pre meal it is slightly higher than normal range but not horrible.

The determination of whether you're entering the diabetes stage is on more than one test that has a reading of more than 120.

If you're concerned I'd have your doctor do the appropriate tests to determine facts for you.

Below are a few good sites to help you with your question.

Alternative Names
Random blood sugar; Blood sugar level; Fasting blood sugar
How the Test is Performed
Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine (antiseptic). The health care provider wraps an elastic band around the upper arm to apply pressure to the area & make the vein swell with blood.

Next, the health care provider gently inserts a needle into the vein. The blood collects into an airtight vial or tube attached to the needle. The elastic band is removed from ur arm.

Once the blood has been collected, the needle is removed, & the puncture site is covered to stop any bleeding.

In infants or young children, a sharp tool called a lancet may be used to puncture the skin & make it bleed. The blood collects into a small glass tube called a pipette, or onto a slide or test strip. A bandage may be placed over the area if there is any bleeding.

How to Prepare for the Test
The test may be done while u r fasting or at random.

If u r having a fasting glucose blood test, u should not eat or drink for 6 hours before the test.

A random glucose test can be done at any time of the day, but results depend on what u drink or eat before the test, as well as activity.

How the Test Will Feel
When the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing.

Why the Test is Performed
Your doctor may order this test if u have signs of diabetes. It is also used to monitor patients who have the disease.

The carbohydrates u eat eventually end up as glucose in the blood. Glucose is a major source of energy for most cells of the body, including those in the brain.

Normal Results
Levels vary according to the laboratory, but in general up to 100 milligrams per deciliter (mg/dL) r considered normal.

Persons with levels between 100 & 126 mg/dL may have impaired fasting glucose or pre-diabetes. These levels r considered to be risk factors for type 2 diabetes & its complications.

Diabetes is typically diagnosed when fasting blood glucose levels r 126 mg/dL or higher.

Note: Normal value ranges may vary slightly among different laboratories. Talk to ur doctor about the meaning of ur specific test results.

What Abnormal Results Mean
Greater than normal levels (hyperglycemia) may indicate:

Acromegaly (very rare)
Cushing syndrome (rare)
Diabetes mellitus
Impaired fasting glucose (prediabetes)
Hyperthyroidism
Pancreatic cancer
Pancreatitis
Pheochromocytoma (very rare)
Too little insulin
Excessive food intake
Lower than normal levels (hypoglycemia) may indicate:

Hypopituitarism
Hypothyroidism
Insulinoma (very rare)
Too much insulin
Insufficient dietary intake
Additional conditions under which this test may be performed:

Acute adrenal crisis
Cushing syndrome caused by adrenal tumor
Cushing syndrome - exogenous
Delirium
Dementia
Dementia due to metabolic causes
Diabetic hyperglycemic hyperosmolar coma
Diabetic ketoacidosis
Diabetic nephropathy/sclerosis
Ectopic Cushing syndrome
Epilepsy
Generalized tonic-clonic seizure
Glucagonoma
Islet of Langerhans' tumor
Multiple endocrine neoplasia (MEN) l
Pituitary Cushing is (Cushing is disease)
Syphilis
Syphilis - primary
Syphilis - secondary
Syphilis - tertiary
Type 1 diabetes
Type 2 diabetes
Transient ischemic attack (TIA)
Risks
Veins & arteries vary in size from one patient to another & from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.

Other risks associated with having blood drawn r slight but may include:

Excessive bleeding
Fainting or feeling light-headed
Hematoma (blood accumulating under the skin)
Infection (a slight risk any time the skin is broken)
Considerations
Many forms of severe stress (for example, trauma, stroke, heart attack, & surgery) can temporarily increase glucose levels.

Drugs that can increase glucose measurements include the following:

Atypical antipsychotics, especially olanzapine
Corticosteroids
Diazoxide
Intravenous dextrose
Diuretics
Epinephrine
Estrogens
Glucagon
Isoniazid
Lithium
Phenothiazines
Phenytoin
Salicylates (acute toxicity -- see aspirin overdose)
Triamterene
Tricyclic antidepressants
Drugs that can decrease glucose measurements include the following:

Acetaminophen
Alcohol
Anabolic steroids
Clofibrate
Disopyramide
Gemfibrozil
Monoamine oxidase inhibitors (MAOIs)
Pentamidine
Sulfonylurea medications (such as glipizide, glyburide, & glimepiride

Even if you had just eaten it is a bit high but do not let one random test convince you of anything. You should keep testing at home to determine if those numbers are consistent and if they are you should have a fasting blood sugar test performed by a lab for definitive results.

First why are you checking your Blood Glucose?
Second Who gave you the kit to do it?
And third why arent you talking to your mom and dad?
This figure is barely out of range and those telling you below that you are diabetic with this level are talking nonsense.
The important thing is to talk to your mom and dad and STOP self checking get PROFESSIONAL medical help.

If you tested it after fasting for at least 8 hours it is high.See a Doctor.