Diabetes Screening: Who Should Get Tested and When (Australian Guidelines)

Are you at risk for diabetes but haven’t been tested? This guide explains who should get diabetes screening, when to test, and Medicare coverage based on Australian guidelines, helping Carindale residents catch diabetes early.

Important Note: Always consult your GP before deciding on diabetes testing. Every person’s health is different, and professional medical advice helps ensure you receive appropriate screening based on your risk factors.

Why Diabetes Screening Matters

Over 1.7 million Australians have diabetes, but nearly 40% don’t know they have it. Type 2 diabetes develops silently for years, damaging your heart, kidneys, eyes, and nerves before symptoms appear.

Early detection changes outcomes: People diagnosed through screening prevent 50% of complications compared to those diagnosed after symptoms start.

Who Should Get Diabetes Screening (Australian Guidelines)

Universal Screening Recommendations

High-Risk Groups: Screen Every 12 Months (Starting Age 18)

You need annual screening if you have ANY of these risk factors:

You should have a diabetes screening every 12 months if you have any of the following risk factors:

Weight and Body Factors

• BMI over 25 (overweight) or over 30 (obese)
• Waist circumference over 94 cm (men) or 80 cm (women)
• Previously diagnosed with prediabetes

Family History

• Parent or sibling with diabetes
• High-risk ethnic background (Indigenous Australian, Pacific Islander, South Asian, Middle Eastern, or African)

Medical Conditions

• High blood pressure (over 130/80 mmHg)
• High cholesterol (LDL over 2.0 mmol/L)
• Heart disease or previous stroke
• Kidney disease
• History of gestational diabetes
• Polycystic Ovary Syndrome (PCOS)
• Type 1 diabetes (increased risk of additional metabolic complications)

Lifestyle Factors

• Less than 30 minutes of physical activity per day
• Smoking
• Sedentary lifestyle (e.g., desk-based work with minimal movement)

Pregnancy and Women’s Health

• Previous gestational diabetes: test 6–12 weeks after birth, then annually
• PCOS: annual screening recommended from age 25

Age & Ethnicity

• Indigenous Australians: Screen every 12 months from age 18
• Over 45: Screen annually regardless of other risk factors
• Over 70: Screen annually even if previously normal

Diabetes Screening Tests: What Your GP Orders Primary Screening Test

HbA1C (Haemoglobin A1C) Test

• What it measures: Average blood sugar every 3-6 months
• No fasting required: Can be done any time
• Results in: 1-2 days
• Medicare: Fully covered

Alternative Tests (If HbA1C Unavailable)

Fasting Plasma Glucose (FPG)

• What it measures: Blood sugar after an 8-10 hour fast
• Fasting required: No food or drink (except water) for 8 hours
• Best time: Morning appointment
• Medicare: Fully covered

Oral Glucose Tolerance Test (OGTT)

• What it measures: Blood sugar 2 hours after a sugary drink
• Fasting required: 8-10 hours before + 2-hour wait after drink
• Duration: 2-3 hours at the pathology
• Medicare: Fully covered
• Results will be sent to your GP for follow up.

Additional Tests After Diabetes Diagnosis

• Full blood count: Check for anaemia
• Kidney function tests: Creatinine, eGFR
• Liver function tests: ALT, AST
• Cholesterol test: LDL, HDL, triglycerides
• Urine test: Protein (checks kidney damage)
• C-reactive protein: Inflammation marker

When to Get Tested Immediately (Don’t Wait)

Book a screening now if you experience diabetes symptoms:

• Frequent urination (especially waking 2+ times nightly)
• Extreme thirst (drinking more than usual)
• Unexplained weight loss (without dieting)
• Constant fatigue (tired despite rest)
• Blurry vision (sudden changes)
• Slow wound healing (cuts take weeks to heal)
• Frequent infections (skin, urinary, yeast)
• Tingling or numbness in hands/feet
• Dark patches on skin (neck, arms, thighs)

These symptoms suggest diabetes may already be present; test immediately.

How Often to Get Diabetes Screening If Results Are Normal

If Results Show Prediabetes

• Test frequency: Every 6-12 months
• Goal: Reverse through lifestyle changes
• Success rate: 50-70% can prevent diabetes

If Diabetes Is Diagnosed

• Test frequency: Every 3- 6 months (A1C monitoring)
• Annual tests: Eye check, kidney function, cholesterol, Feet check
• Goal: Maintain A1C under 7%

Medicare Coverage for Diabetes Screening What Medicare Covers (100%)

• HbA1C test: Fully covered (~$6.30 rebate)
• Fasting glucose test: Fully covered (~$5.40 rebate)
• OGTT: Fully covered (~$10.80 rebate)
• Annual diabetes review: Medicare Chronic Disease Management plan
• follow-up tests: Kidney, liver, cholesterol

What Medicare Partially Covers

• Private specialist visits:
• Advanced testing: Some genetic tests are partially covered

What Medicare Doesn’t Cover

• Home blood glucose monitors: Out-of-pocket (unless diabetic)
• glucose monitoring sensors: Most are not covered
• Diabetes education apps: Out-of-pocket