Diabetes Screening: What Do I Test?
- EvergreenMedicalClinic
- Jul 7
- 4 min read
Many people assume that diabetes only affects older adults or those with obvious symptoms. However, the reality is quite different. In Malaysia, diabetes is increasingly being diagnosed in younger adults, and many people do not realise they have the condition until complications develop.
The good news is that diabetes can often be detected early through simple screening tests. Early diagnosis allows for timely treatment and lifestyle changes, helping to reduce the risk of serious health problems.
So, when should you start diabetes screening? Here's what every Malaysian should know.
Why Diabetes Screening Matters
Diabetes often develops gradually. During the early stages, many individuals experience no symptoms at all.
Without screening, high blood sugar may go unnoticed for years while silently damaging blood vessels and nerves throughout the body. By the time symptoms appear, complications may already have started.
Early detection allows healthcare providers to identify prediabetes or diabetes before irreversible damage occurs and provides an opportunity to intervene early.
Diabetes in Malaysia: A Growing Concern
Malaysia has one of the highest diabetes burdens in Southeast Asia. According to the International Diabetes Federation, approximately 21.1% of adults aged 20 to 79 years in Malaysia are living with diabetes, with many cases remaining undiagnosed.¹
Rapid urbanisation, sedentary lifestyles, increasing obesity rates, unhealthy dietary patterns, and an ageing population have all contributed to this growing public health challenge.
When Should You Start Screening?
Adults Aged 35 Years and Above
Many international and local guidelines recommend that adults begin routine diabetes screening from around age 35, particularly if they have never been tested before. Even if you feel healthy, screening can detect problems before symptoms develop.
Earlier If You Have Risk Factors
You may benefit from earlier screening if you have one or more of the following:
A parent or sibling with diabetes
Overweight or obesity
High blood pressure
High cholesterol
A sedentary lifestyle
A history of gestational diabetes during pregnancy
Polycystic ovary syndrome (PCOS)
Previous diagnosis of prediabetes
Cardiovascular disease
For these individuals, screening before age 35 may be appropriate after discussion with a healthcare professional.
Symptoms That Should Prompt Testing
You should seek medical assessment promptly if you experience:
Frequent Urination
High blood sugar causes the kidneys to remove excess glucose through urine, leading to more frequent trips to the bathroom.
Excessive Thirst
Increased urination can result in dehydration and persistent thirst.
Unexplained Fatigue
When glucose cannot effectively enter cells, your body struggles to produce energy, leaving you feeling constantly tired.
Blurred Vision
Changes in blood sugar can temporarily affect the lens of the eye and, over time, may damage retinal blood vessels.
Increased Hunger
Despite eating normally, your body may be unable to utilise glucose efficiently, leading to persistent hunger.
Slow-Healing Wounds
High blood sugar may impair circulation and immune function, delaying wound healing.
Frequent Infections
Recurring skin infections, urinary tract infections, or fungal infections can sometimes be associated with elevated blood sugar levels.
Tingling or Numbness
Persistent high blood sugar may damage nerves, causing tingling, burning sensations, or numbness in the hands and feet.
Remember, many people with diabetes experience no symptoms at all, which is why routine screening remains so important.
What Tests Are Used to Screen for Diabetes?
HbA1c Test
HbA1c measures your average blood sugar over the previous two to three months and does not usually require fasting. It is commonly used to diagnose diabetes and prediabetes and to monitor long-term blood sugar control.
Fasting Blood Glucose
This test measures your blood sugar after fasting for at least eight hours and remains a widely used screening method.
Oral Glucose Tolerance Test (OGTT)
In some cases, your doctor may recommend an oral glucose tolerance test, which measures how your body handles sugar after consuming a glucose drink.
Our healthcare provider will recommend the most appropriate test based on your individual circumstances.
How Often Should You Be Screened?
The ideal screening interval depends on your personal risk profile.
General recommendations include:
Low-risk adults: Every 3 years or as advised by your healthcare provider.
People with prediabetes or multiple risk factors: More frequent monitoring may be recommended.
Individuals with previous abnormal results: Follow-up according to your doctor's advice.
Regular health assessments help identify changes before complications arise.
Can Diabetes Be Prevented?
While not every case can be prevented, many instances of Type 2 diabetes can be delayed or avoided through healthy lifestyle choices.
Helpful measures include:
Maintaining a healthy body weight
Exercising regularly
Eating a balanced diet rich in vegetables, whole grains, and lean proteins
Reducing intake of sugary drinks and highly processed foods
Sleeping adequately
Avoiding smoking
Attending routine health screenings
For people diagnosed with prediabetes, these measures may even help restore blood sugar levels to the normal range.
Why Early Detection Makes a Difference
Untreated diabetes can increase the risk of:
Heart disease
Stroke
Kidney disease
Vision loss
Nerve damage
Foot complications
Detecting diabetes early gives you the opportunity to manage your condition before these complications occur.
Final Thoughts
Diabetes screening is one of the simplest and most effective ways to protect your long-term health.
Even if you feel perfectly well, regular blood sugar testing may uncover hidden problems before symptoms develop. If you have risk factors or have never been screened, now is a good time to discuss testing with our doctors.
Taking action today may help prevent complications tomorrow.
Book Your Diabetes Screening
At Evergreen Medical Clinic, we offer comprehensive health screening packages that include blood sugar testing and HbA1c assessment. Whether you want to check your diabetes risk or monitor your overall health, our healthcare team is here to guide you.
Early detection empowers better decisions—and better health.
Book Online Today: https://booky.my/evergreenmedicalclinic
Get in Touch With Us
Contact: +6018-9698786
References
International Diabetes Federation. Diabetes in Malaysia. IDF Diabetes Atlas. Available at: https://idf.org/our-network/regions-and-members/western-pacific/members/malaysia/
American Diabetes Association. Standards of Care in Diabetes—2025. Diabetes Care. 2025;48(Suppl 1). Available at: https://diabetesjournals.org/care/issue/48/Supplement_1
U.S. Preventive Services Task Force. Screening for Prediabetes and Type 2 Diabetes. JAMA. 2021;326(8):736–743. https://jamanetwork.com/journals/jama/fullarticle/2783414
Ministry of Health Malaysia. Clinical Practice Guidelines: Management of Type 2 Diabetes Mellitus (6th Edition). Available through the Malaysian Health Technology Assessment Section.
World Health Organization. Diabetes Fact Sheet. Available at: https://www.who.int/news-room/fact-sheets/detail/diabetes
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