Improve Energy, Reduce Fatigue & Enhance Sleep
Struggling with low energy, constant fatigue or unrefreshing sleep? Our scientifically backed panels help you uncover the root causes with targeted testing, including a blood test for fatigue, advanced hormone testing, nutrient analysis and at-home sleep tests. Whether you need a thyroid function test, iron studies blood test, vitamin D blood test, vitamin B12 blood test, a cortisol test, or a complete DUTCH test, these assessments give you the insights you need to regain energy, improve sleep and support long-term wellbeing. A hormone imbalance is one of the most common hidden causes of persistent fatigue - testing can help you find out.
How i-screen works
01Order online
Choose your preferred blood test and place your order securely through our website.
02Receive pathology request form
We'll email you your pathology request form, which you'll need for your blood draw.
03Visit a Collection Centre
Take your pathology request form to one of our affiliated collection centres for your blood sample.
04Get your results
Your results are typically available within 48 hours depending on the test. We'll notify you by email when your results are ready to view in your i-screen dashboard.
Want the most complete assessment of the causes behind low energy?
If fatigue is affecting your daily life, our comprehensive panels analyse hormones, nutrients, stress response and metabolism to give you the clearest picture of what’s driving your symptoms. These options combine a blood test for fatigue with deeper investigations into energy production and sleep regulation.
Deep insights into cardiovascular, hormonal, nutritional and gut health across 117 biomarkers in one women's blood test.
Deep insights into cardiovascular, hormonal, nutritional and gut health across 117 biomarkers in one blood test.
Urine test measuring organic acid markers relevant to nutrient, gut and metabolic health.
Measure iron, B12, vitamin D, thyroid and inflammation — markers commonly assessed when exploring persistent fatigue.
Is your thyroid draining your energy?
Thyroid issues are among the most common causes of fatigue. Our thyroid function test, thyroid antibodies test, and reverse T3 analysis uncover subtle thyroid imbalances that may be slowing your metabolism, disrupting sleep or causing persistent tiredness. Read our guide to 8 reasons to get your thyroid checked if you suspect your thyroid may be contributing to your symptoms.
Measure TSH, free T3 and free T4 — the core markers for understanding your thyroid levels.
Comprehensive thyroid panel including TSH, T3, T4 plus thyroid antibodies for a detailed thyroid profile.
Our most complete thyroid panel: TSH, free T3, free T4, reverse T3 plus three thyroid antibodies for a full picture.
Test TPO and TG antibodies — markers relevant to autoimmune thyroid conditions such as Hashimoto's or Graves'.
Measure reverse T3 - the inactive thyroid hormone that can block T3 function despite normal TSH results.
Test selenium and iodine - essential cofactors your thyroid needs to produce hormones effectively.
Are you experiencing hidden nutrient deficiencies?
Low levels of iron, B12 and vitamin D are leading causes of fatigue, low mood and reduced resilience. These tests identify deficiencies quickly with a vitamin D blood test, vitamin B12 blood test, and iron studies blood test, helping you understand how nutrient status impacts your energy. Vitamin D in particular affects far more than bone health — read why vitamin D might be the mood hormone you’re overlooking.
Check your iron, ferritin and transferrin levels. Iron deficiency is Australia’s most common nutritional problem.
Test vitamin B12 levels - essential for nerve function, red blood cells and energy production.
Check your vitamin D level - over 30% of Australian adults are deficient, causing fatigue and muscle weakness.
Combined iron, B12 and folate panel — key nutrients relevant to energy and blood cell health.
Screen 27 vitamins and minerals including zinc, selenium, magnesium, B vitamins and antioxidants in one panel.
This test includes 26 essential and non essential amino acids. Testing amino acids helps assess nutritional status, metabolic function, and potential deficiencies or imbalances that may impact energy, mood, detoxification, and overall health.
Is stress disrupting your hormones and energy?
Chronic stress can deplete your energy and disrupt key hormonal rhythms. Our cortisol test, Cortisol Awakening Response, and DUTCH test reveal how stress is impacting your body and whether adrenal fatigue-like patterns are present. Learn more about what your cortisol awakening response says about your stress resilience, and read how the DUTCH test can uncover hidden causes of fatigue.
Saliva test mapping your morning cortisol spike and daily rhythm — markers relevant to understanding your stress response.
Saliva test measuring cortisol and DHEA-S levels across the day — markers relevant to your stress and energy patterns.
Dried urine test mapping cortisol patterns, oestrogen, progesterone, testosterone and their metabolites across a full day.
Is poor sleep impacting your recovery and mood?
Sleep issues are a major driver of fatigue. Our at-home sleep test options analyse melatonin, cortisol rhythms and sleep-regulating hormones to uncover why your sleep quality may be suffering.
Sleep is vital to good health. A lack of sleep affects mood, concentration, memory, weight and quality of life. This sleep test assesses the hormones which influence your sleep patterns.
Saliva test mapping your morning cortisol spike and daily rhythm — markers relevant to understanding your stress response.
Dried urine test mapping cortisol patterns, oestrogen, progesterone, testosterone and their metabolites across a full day.