Diabetes is one of the fastest-growing chronic lifestyle disorders in the world, affecting millions of people. However, most of them remain undiagnosed. Pre-diabetes and type 2 diabetes often develop silently, without causing any visible signs. A major concern is that more than one-third of patients have developed diabetes-related complications by the time they are first diagnosed.
Diabetes-related complications are the primary cause of kidney failure, vision loss, nerve damage and cardiovascular disease. These statistics highlight the importance of regular diabetes screening for early detection and timely management.
(Take Charge Of Your Health, Book A Comprehensive Diabetes Screening Today And Detect Risks Before Symptoms Appear.)
Early diagnosis offers life-changing benefits. Evidence suggests that diabetes screening helps mitigate heart attacks and other complications by three to nine cases for every 1000 patients screened. Individuals who get early diagnosis and appropriate treatment have better survival rates and fewer complications than those who don’t get early care. This is why diabetes screening plays an important role in identifying uncontrolled blood sugar levels early.
Take this two-minute read to understand who should get screened for diabetes, when to get tested, common screening methods and how early detection can optimise long-term health.
Why Is Diabetes Screening Important?
Diabetes screening is a simple medical assessment that monitors whether your blood glucose levels are higher than the normal range.
Prompt screening helps:
Detect prediabetes before it progresses
Identify diabetes at a starting stage
Lower the risk of complications affecting the heart, kidneys, eyes, and nerves
Promote healthy lifestyle modifications
Better treatment outcomes
Reduce healthcare costs associated with advanced diabetes
Most people with prediabetes have no signs and symptoms, which makes routine screening extremely crucial.
Who Should Get Screened for Diabetes?
Healthcare experts recommend diabetes screening for people at increased risk.
Adults Aged 35 Years and Above
Most health guidelines recommend that adults aged 35 years or older should get diabetes screening even if they show no signs or symptoms. If results are normal, repeat testing every three years, or more frequently if additional risk factors develop.
People Who Are Overweight/ Obese
Adults with a Body Mass Index (BMI) of 25 or higher should get screened if they have one or more additional diabetes risk factors.
Individuals With a Family History of Diabetes
The risk remarkably increases if one of the parents has diabetes, or a sibling has diabetes or if there are numerous close blood relationships.
Also Read: Type 2 Diabetes Mellitus: Causes, Symptoms And Treatment
People With High Blood Pressure
Hypertension and diabetes are closely related, and in most cases they often develop together. Thus, early screening is suggested for people with:
Blood pressure of 140/90 mmHg or higher.
Those taking medication for hypertension for a longer period.
Women With Gestational Diabetes
Women who developed diabetes during pregnancy should:
Get tested 4–12 weeks after delivery
Continue diabetes screening every 1–3 years
Women With Polyendocrine Metabolic Syndrome
PMOS increases insulin resistance and the risk of developing diabetes at a younger age. Routine screening is strongly recommended.
Individuals Showing Symptoms of Diabetes
Immediate assessment and evaluation are recommended for those experiencing symptoms such as:
Excessive thirst
Frequent urination
Increased hunger
Unexplained weight loss
Blurred vision
Slow-healing wounds
Frequent infections
Tingling or numbness in hands and feet
Persistent fatigue
Common Diabetes Screening Tests
Fasting Blood Sugar (FBS)
Measures blood glucose after fasting for at least eight -twelve hours.
Interpretation:
Normal: Below 100 mg/dL
Prediabetes: 100–125 mg/dL
Diabetes: 126 mg/dL or higher
HbA1c Test
An HbA1c blood test measures your average blood sugar over the past two to three months. The HbA1c test is considered the most recommended screening tool.
Results:
Normal: Below 5.7%
Prediabetes: 5.7%–6.4%
Diabetes: 6.5% or higher
Also Read: Diabetes Management: What Is HbA1C? Why Is It Done and The Normal Values
Oral Glucose Tolerance Test (OGTT)
This test measures blood sugar before and after drinking a concentrated glucose solution. The blood sugar levels are usually checked at an interval of 1 hour, 2 hours, and possibly 3 hours afterwards.
At 2 hours:
Normal: 140 mg/dL or below
Prediabetes: 140–199 mg/dL
Diabetes: 200 mg/dL or above
Tests For Gestational Diabetes
Glucose screening test
In this test, you will be asked to drink a liquid containing glucose. Post that 1 hour later, your blood will be checked; if the result is 140 mg/dl or lower, it is considered normal. However, if your value is higher than140 mg/dl, you will have to take a glucose tolerance test.
Glucose tolerance test
This test measures your blood sugar before and after drinking a liquid containing glucose. You must be in a state of fasting overnight after dinner. The blood sugar level is usually checked at intervals of 1 hour, 2 hours and 3 hours afterwards.
Results can vary depending on the amount of glucose present in the drink and how often your blood sugar is tested.
Random Blood Sugar Test
Performed at any time of the day regardless of meals. Usually recommended when symptoms strongly suggest diabetes.
Can Diabetes Be Prevented?
While type 1 diabetes cannot currently be prevented, many cases of type 2 diabetes can be delayed or prevented through healthy lifestyle habits.
Effective Preventive Measures Include:
Maintain body weight within a healthy range.
Exercise for at least 150 minutes weekly.
Eat a balanced diet rich in vegetables, fruits, whole grains, legumes, and lean proteins
Restrict intake of junk foods, sugary beverages and processed foods
Quit smoking
Limit alcohol consumption
Get adequate sleep for at least 7-9 hours daily
Manage stress effectively
Have regular health check-ups
Even small lifestyle improvements can substantially reduce diabetes risk.
What are the Benefits of Early Diabetes Detection?
Early diagnosis helps:
Delay disease progression and prevent complications
Lower the risk of heart attack and stroke
Improve quality of life
Minimise long-term healthcare costs
Many people successfully manage diabetes through lifestyle modifications when diagnosed early.
Frequently Asked Questions
At What Age Should Diabetes Screening Begin?
Most adults should begin diabetes screening at age 35, even if they have no symptoms. People with risk factors may need earlier testing.
How Often Should I Get Screened For Diabetes?
If your results are normal, screening is generally recommended every three years. People with prediabetes or multiple risk factors may require annual testing.
Which Test Is Best For Diabetes Screening?
The HbA1c test and fasting blood sugar test are among the most used and reliable screening tests for diabetes.
Conclusion
Diabetes screening holds a key role in managing this chronic lifestyle disorder. People who identify diabetes early have a better quality of life. Several studies also revealed that they experienced fewer complications and lower mortality. Your body mostly sends warning signs you should not ignore, such as frequent urination, excessive thirst, hunger and sudden weight loss. However, many people show no signs at all, which makes regular screening very important.
References:
Screening for Diabetes and Prediabetes and their Prediction
Daisy Duan 1, Andre P Kengne 2, Justin B Echouffo-Tcheugui 1,3
https://pmc.ncbi.nlm.nih.gov/articles/PMC8375583/
Diabetes Mellitus Screening
Advait Vasavada; Leslie Faith M. Taub.
https://www.ncbi.nlm.nih.gov/books/NBK554615/
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