“My sugar is controlled. Do I still need diabetes tests?”
Yes.
Diabetes management is not only about checking blood sugar or HbA1c. High blood glucose over time can affect the kidneys, eyes, nerves, heart and blood vessels, often without causing obvious symptoms in the early stages.
That is why regular diabetes check-ups are important even when you feel completely well.
The 2026 American Diabetes Association (ADA) Standards of Care emphasize that diabetes care should include assessment of glycemic control, cardiovascular risk, kidney disease, eye disease, neuropathy, foot health and other diabetes-related complications—not just blood glucose.
So, which tests and examinations should you actually keep track of?
The 7 Important Diabetes Tests and Checks
For most adults with diabetes, the important areas to monitor include:
- HbA1c
- Kidney function – UACR and eGFR
- Cholesterol and lipid profile
- Blood pressure
- Diabetic eye examination
- Foot and nerve examination
- Weight, waist and overall metabolic health
Some people may need additional tests depending on their age, diabetes type, medications and other health conditions.
Let’s understand each one.
1. HbA1c – Your 3-Month Diabetes Report Card
HbA1c is one of the most important tests in diabetes.
It provides an estimate of your average blood glucose over approximately the previous 2–3 months.
For many nonpregnant adults with diabetes, an HbA1c target of less than 7% is appropriate, but the ideal target should be individualized.
Why is HbA1c important?
It helps your doctor determine:
- Whether your diabetes is controlled
- Whether your current treatment is working
- Whether your treatment needs to be intensified
- Whether lifestyle changes are helping
- Whether you may be at increased risk of diabetes complications
However, HbA1c does not tell you everything about your glucose pattern.
Two people can have the same HbA1c but very different glucose profiles.
For example:
Person A:
Fasting sugar 100 mg/dL
Post-meal sugar 150 mg/dL
Person B:
Fasting sugar 90 mg/dL
Post-meal sugar 220 mg/dL
Their average glucose may be similar, but their daily glucose patterns are very different.
That is why HbA1c sometimes needs to be combined with self-monitoring of blood glucose or continuous glucose monitoring (CGM).
How often should HbA1c be checked?
If diabetes is stable and at goal, testing is commonly done at least twice a year.
If treatment has changed or glucose is not at goal, it is generally checked more frequently, often around every 3 months.
2. Kidney Tests – UACR and eGFR
This is one of the most important—and most frequently overlooked—parts of diabetes care.
Diabetes can gradually damage the kidneys.
The problem is that early diabetic kidney disease may produce no symptoms.
You may feel completely normal while kidney damage is already beginning.
That is why screening is so important.
The two key tests are:
UACR
Urine Albumin-to-Creatinine Ratio
This detects abnormal albumin leakage into the urine.
eGFR
Estimated Glomerular Filtration Rate
This is calculated from a blood creatinine measurement and helps estimate kidney filtration.
The ADA 2026 recommends checking UACR and eGFR at least annually in everyone with type 2 diabetes, regardless of treatment, and in type 1 diabetes beginning after 5 years of disease.
What is a normal UACR?
Generally:
- <30 mg/g → normal to mildly increased
- 30–<300 mg/g → moderately increased
- ≥300 mg/g → severely increased
An abnormal UACR does not automatically mean permanent kidney disease.
Albumin excretion can temporarily increase with factors such as infection, exercise, marked hyperglycemia, fever or other conditions.
Therefore, persistent abnormalities usually need confirmation and clinical interpretation.
Why should you check both UACR and eGFR?
Because they provide different information.
UACR tells us about kidney damage.
eGFR tells us about kidney filtration.
A person can have an abnormal UACR even when eGFR is still normal.
That is why checking only creatinine is not enough to screen properly for diabetic kidney disease.
3. Cholesterol and Lipid Profile
Diabetes is strongly associated with cardiovascular disease.
Therefore, checking your cholesterol is not optional simply because your blood sugar is controlled.
A typical lipid profile includes:
- Total cholesterol
- LDL cholesterol
- HDL cholesterol
- Triglycerides
The ADA 2026 recommends lipid assessment at diagnosis/initial evaluation and ongoing monitoring according to age, treatment and cardiovascular risk. For people taking statins, lipid testing is recommended after starting or changing therapy and periodically thereafter.
Why is LDL cholesterol important in diabetes?
LDL cholesterol contributes to atherosclerosis—the buildup of plaque inside arteries.
Diabetes itself increases cardiovascular risk.
Therefore, treatment decisions are based not simply on whether your LDL is “within the laboratory normal range,” but on your overall cardiovascular risk.
For many adults with diabetes aged 40–75 years without established cardiovascular disease, the ADA recommends at least moderate-intensity statin therapy, with more intensive treatment for people at higher risk.
Remember:
“My cholesterol is only slightly high” does not necessarily mean that it is safe to ignore in diabetes.
Your endocrinologist should interpret your lipid profile together with your age, diabetes duration, blood pressure, kidney function, smoking status and cardiovascular history.
4. Blood Pressure – One of the Most Important “Tests” in Diabetes
Blood pressure is not a blood test, but it is one of the most important measurements in diabetes care.
Why?
Because diabetes + high blood pressure can significantly increase the risk of:
- Heart attack
- Stroke
- Kidney disease
- Eye disease
- Heart failure
Your blood pressure should therefore be checked regularly.
The ADA 2026 recommends assessment and management of blood pressure as part of comprehensive diabetes care.
Do not rely only on symptoms
High blood pressure often causes no symptoms.
A person can have significantly elevated blood pressure and feel completely normal.
That is why checking it is so important.
5. Diabetic Eye Examination
One of the biggest misconceptions about diabetes is:
“My eyesight is fine, so I don’t need an eye check.”
This is not necessarily true.
Diabetic retinopathy can develop without noticeable symptoms, particularly in its early stages.
The ADA 2026 recommends:
Type 2 diabetes
A comprehensive dilated eye examination should be performed at the time of diagnosis.
Type 1 diabetes
The initial comprehensive eye examination is recommended approximately 5 years after diabetes begins.
After that, the interval depends on the findings and individual risk. If there is no retinopathy and glucose indicators are within goal, screening every 1–2 years may be considered in some people. If retinopathy is present, examinations are generally required at least annually, with more frequent monitoring when disease is progressing or sight-threatening.
Why is an eye examination important?
Diabetic retinopathy can progress before vision becomes noticeably affected.
Early detection can allow timely treatment and reduce the risk of vision loss.
Diabetes can also increase the risk of other eye conditions, including cataract and glaucoma.
Important point
A routine glasses prescription test is not the same as a diabetic retinal examination.
Ask specifically whether you have had appropriate screening for diabetic retinopathy.
6. Foot and Nerve Examination
Many people with diabetes do not realize that they can gradually lose sensation in their feet.
This is called diabetic peripheral neuropathy.
Symptoms may include:
- Burning
- Tingling
- Numbness
- Pins and needles
- Reduced sensation
- Pain
- Feeling as though you are walking on cotton
But some people have nerve damage without any symptoms.
The ADA recommends assessment for diabetic peripheral neuropathy beginning at diagnosis of type 2 diabetes and 5 years after diagnosis of type 1 diabetes, followed by at least annual assessment.
What happens during a diabetic foot examination?
A clinician may check:
- Skin condition
- Calluses
- Deformities
- Pulses
- Sensation
- Temperature or pinprick sensation
- Vibration
- Protective sensation using a 10-g monofilament
A comprehensive foot evaluation should be performed at least annually. People with sensory loss, previous ulcers or other high-risk findings may require much more frequent examinations.
Why is foot screening so important?
Loss of sensation means that you may not notice:
- A small cut
- A blister
- A burn
- A pressure injury
- An infected wound
A minor injury can therefore become a serious diabetic foot ulcer if it is not identified and treated early.
Check your feet every day.
Look for:
- Cuts
- Blisters
- Redness
- Swelling
- Cracks
- Discoloration
- Wounds
- Discharge
And do not walk barefoot if you have reduced sensation.
7. Weight, Waist and Overall Metabolic Health
Diabetes treatment is not simply about reducing glucose.
Weight management is also an important component of modern diabetes care.
Your doctor may monitor:
- Body weight
- BMI
- Waist circumference
- Weight change over time
- Blood pressure
- Physical activity
- Diet
- Sleep
- Liver health
The ADA 2026 recommends assessing weight and obesity-related factors as part of comprehensive diabetes care.
For people with type 2 diabetes and overweight or obesity, even moderate weight loss can improve glucose control and cardiovascular risk factors, while greater weight loss can provide additional metabolic benefits.
What About the Liver?
There is another area that deserves attention in many people with type 2 diabetes:
metabolic dysfunction-associated steatotic liver disease (MASLD).
Fatty liver is common in people with diabetes and obesity.
The ADA 2026 includes assessment for MASLD/MASH as part of comprehensive diabetes care.
Depending on your risk factors, your doctor may evaluate:
- Liver enzymes
- Platelet count
- FIB-4 score
- Ultrasound or other imaging
- Additional liver fibrosis assessment when indicated
A mildly abnormal or even normal liver enzyme result does not always exclude significant fatty liver disease.
What About Vitamin B12?
This is particularly relevant for people taking metformin for many years.
Long-term metformin use can be associated with vitamin B12 deficiency.
The ADA 2026 includes vitamin B12 assessment as appropriate, particularly in people taking metformin for more than 5 years or when there are risk factors or symptoms.
Symptoms of B12 deficiency may include:
- Fatigue
- Weakness
- Anemia
- Tingling
- Numbness
This can be particularly important in someone with diabetes because B12 deficiency and diabetic neuropathy can sometimes produce overlapping symptoms.
How Often Should a Person With Diabetes Get Checked?
There is no single schedule that applies to everyone.
The frequency depends on:
- Type of diabetes
- Duration of diabetes
- Age
- HbA1c
- Medications
- Kidney function
- Blood pressure
- Cholesterol
- Presence of complications
- Pregnancy
- Cardiovascular disease
- Other medical conditions
A simplified approach for many adults with type 2 diabetes looks like this:
| Check | Typical approach |
|---|---|
| HbA1c | At least twice yearly if stable; more often if not at goal or treatment changes |
| UACR | At least annually |
| eGFR/creatinine | At least annually |
| Lipid profile | At diagnosis and according to age/treatment/risk; more frequently when lipid therapy changes |
| Blood pressure | Regularly/at clinical visits |
| Eye examination | At diagnosis of type 2 diabetes, then according to findings |
| Foot examination | At least annually; more frequently if high risk |
| Neuropathy assessment | At least annually after the recommended starting point |
| Weight/BMI | Regularly |
These are general recommendations, not a personal testing schedule. Your endocrinologist may recommend more frequent testing depending on your individual risk.
Why Do I Need These Tests If My HbA1c Is 6.5%?
This is a very important question.
Imagine someone has:
HbA1c: 6.5%
but also has:
- High blood pressure
- High LDL cholesterol
- Increased UACR
- Early diabetic retinopathy
The HbA1c looks good, but the person still has important health risks.
This is why modern diabetes management focuses on more than glucose.
The ADA describes glycemic management as one part—not the sole goal—of the clinical encounter. Comprehensive diabetes care also addresses complications and cardiovascular and kidney risk.
Can Diabetes Complications Be Present Without Symptoms?
Yes.
This is one of the most important messages for every person with diabetes.
Kidney disease
May be silent in the early stages.
Diabetic retinopathy
May not affect vision initially.
Neuropathy
Can sometimes be detected on examination before symptoms become obvious.
High blood pressure
Often has no symptoms.
High cholesterol
Usually causes no symptoms.
That is why screening is prevention.
You should not wait for symptoms before checking for diabetes complications.
A Simple Diabetes Health Checklist
If you have diabetes, ask yourself:
☐ When was my last HbA1c?
☐ Have I checked my urine UACR?
☐ Do I know my eGFR?
☐ Do I know my LDL cholesterol?
☐ Is my blood pressure under control?
☐ When was my last diabetic eye examination?
☐ Have I had a proper foot examination?
☐ Has my doctor checked for neuropathy?
☐ Has my weight or waist circumference changed?
☐ If I take metformin long term, does B12 need to be checked?
☐ Have I been assessed for fatty liver when appropriate?
If several answers are “I don’t know,” it may be time for a diabetes review.
Diabetes Check-Up: What Should You Take to Your Doctor?
Before your appointment, it can be useful to bring:
- Previous HbA1c reports
- Glucose readings
- Current medication list
- Blood pressure readings
- Weight history
- Lipid reports
- Kidney function reports
- Previous eye examination
- Any foot or neuropathy symptoms
- Details of recent medication changes
This allows your doctor to look at the trend, rather than just one isolated report.
The Most Important Message
Diabetes is much more than a sugar problem.
Good diabetes care means protecting your:
❤️ Heart
🧠 Nerves
👁️ Eyes
🫘 Kidneys
🦶 Feet
and maintaining a healthy weight and metabolic profile.
Checking these regularly can help identify problems before they become serious.
You do not need to wait until you develop symptoms.
Frequently Asked Questions
What is the most important test for diabetes?
HbA1c is an important measure of long-term glucose control, but it is not the only test that matters. Kidney, eye, foot, cardiovascular and metabolic health also need assessment.
How often should HbA1c be checked?
Many adults with stable diabetes at goal need HbA1c at least twice a year. Those not at goal or who have had treatment changes may need testing more frequently.
Is creatinine enough to check diabetic kidney disease?
No. Kidney screening in diabetes should include UACR and eGFR.
Do I need an eye test if I can see perfectly?
Yes. Diabetic retinopathy can be present without obvious visual symptoms. People with type 2 diabetes should have an appropriate eye examination at diagnosis.
How often should a diabetic foot examination be done?
A comprehensive foot examination should be performed at least annually. People at higher risk may need more frequent examinations.
Do people with diabetes need cholesterol testing?
Yes. Lipid assessment is an important part of cardiovascular risk management in diabetes.
Should I check vitamin B12 if I take metformin?
Long-term metformin use can be associated with B12 deficiency. Your doctor may recommend testing, particularly after prolonged use or when symptoms/risk factors are present.
Can I skip these tests if my diabetes is well controlled?
It is generally not advisable to skip recommended complication screening simply because your HbA1c is good. Good glucose control reduces risk but does not eliminate the need for appropriate screening.
Conclusion
A good diabetes check-up is much more than an HbA1c test.
Regular monitoring of glucose, kidney function, cholesterol, blood pressure, eyes, nerves, feet and weight can help detect problems early and reduce the risk of serious complications.
If you have diabetes, don’t ask only:
“What is my sugar?”
Also ask:
“How are my kidneys, eyes, heart, nerves and feet?”
That is the difference between simply treating diabetes and practicing comprehensive diabetes care.
Consult Dr. Moxit Shah, DM Endocrinologist in Ahmedabad
If you have diabetes and want a comprehensive review of your blood sugar, HbA1c, weight, kidney function, cholesterol, cardiovascular risk and diabetes complications, an endocrinology consultation can help create an individualized monitoring and treatment plan.
Dr. Moxit Shah, DM Endocrinologist
Ahmedabad, Gujarat
Appointments: +91 99799 92797
