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What you should know about blood glucose testing: analysis through real-life situations
Situation 1: «I have a headache in the morning, but I feel sleepy at lunchtime»
Peter, 42 years old, office worker. He complained of fatigue, slight dizziness in the morning, irritability. He did not pay attention until he fainted on the way to work. After hospitalization, he was prescribed a blood test for glucose.
What kind of analysis is this?
This is a test that measures glucose levels, the main source of energy for the brain and muscles. If the sugar level is higher or lower than normal, the body is experiencing a deficiency or toxic load.
Situation 2: «Pregnancy is not a disease, but control is necessary»
Olena is 25 weeks pregnant. The midwife recommended a glucose test to detect gestational diabetes. The woman felt fine, but did not expect her glucose levels to be elevated after a glucose load.
Why is this important?
Gestational diabetes often has no symptoms, but it can affect the development of the fetus. Testing can help prevent complications, such as a high birth weight baby or hypoglycemia after delivery.
What does a blood glucose test show?
| Analysis type | Target |
|---|---|
| Fasting glucose | Basic screening for diabetes |
| Glucose tolerance test | Diagnosis of impaired glucose tolerance |
| Glycated hemoglobin (HbA1c) | Determining the average sugar level for 3 months |
| Random glucose level | Rapid test for symptoms |
How to prepare for analysis: through the eyes of the laboratory
Laboratories advise:
Refrain from eating for 8–12 hours
Avoid physical exertion the day before
Don't smoke in the morning.
Tell your doctor about medications that may affect your blood sugar levels.
Comparative table of norms
| Indicator | Norm for an adult |
|---|---|
| Fasting glucose | 3.3 – 5.5 mmol/l |
| 2 hours after eating | < 7.8 mmol/L |
| Glucose tolerance test (2 hours) | < 7.8 mmol/L |
| Glycated hemoglobin (HbA1c) | < 5.7 % |
If fasting glucose ≥ 7.0 mmol/L or HbA1c ≥ 6.5 % is a sign of diabetes.
Frequently asked questions from patients
1. Can I drink water before the test?
Yes, but not sugary or energy drinks.
2. Why can sugar be temporarily elevated?
Due to stress, infection, taking certain medications.
3. If there are no symptoms, why take the test?
Type 2 diabetes can be asymptomatic for years.
4. Is it possible to lower glucose levels without medication?
Yes, with prediabetes, proper nutrition, physical activity, and weight loss can normalize indicators.
Even a small deviation in glucose levels is a reminder that the body needs attention. Sometimes this simple test can be the beginning of lifestyle changes that will protect against serious illness.
