The Sleep & Stress Profile is an advanced saliva-based test that assesses the two key hormones involved in sleep regulation and stress response: cortisol and melatonin. By measuring cortisol at multiple points across the day and night alongside melatonin, this profile provides insight into your natural hormone rhythms and how they may be affecting sleep quality, energy levels and stress resilience. Disrupted rhythms are commonly linked to poor sleep, unrefreshing rest and daytime fatigue.
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The value
Why it's worth knowing
The full diurnal cortisol and melatonin curve
Six saliva samples across the day reveal the natural rise and fall of cortisol and melatonin. The depth no single blood draw can provide.
For when sleep is broken but you do not know why
Trouble falling asleep, waking at 3 AM, low morning energy, anxious mornings or wired evenings. This panel reveals whether cortisol or melatonin is the cause.
Cortisol curve reveals burnout, anxiety and adrenal patterns
A healthy cortisol curve peaks in the morning and drops by night. A flatlined or inverted curve is the biochemical signature of chronic stress and burnout.
Melatonin curve reveals circadian disruption
Late melatonin onset, low midnight melatonin or daytime melatonin all explain sleep issues that standard blood tests miss entirely.
The longevity buyer’s diagnostic for stress aging
Chronic cortisol dysregulation drives accelerated aging, insulin resistance, muscle loss and cognitive decline. One of the most underused longevity markers.
A simple at-home saliva kit, no lab visit needed
Order online, collect six saliva samples across one day, post back in the pre-paid envelope. No clinic, no appointment, no referral.
Australia's easiest at-home testing
Get your at-home test in three simple steps
One price covers your kit, testing and results. It really is that easy.
1
Step one
Order online
Choose your at-home test kit and order online in minutes. No practitioner consult, GP referral or appointment needed.
2
Step two
Kit arrives at your door
Your test kit is posted to you within 1 to 3 business days with everything you need and step-by-step instructions.
3
Step three
Collect your sample and post it back
Collect your sample at home in 5 to 15 minutes, then post it back in the pre-paid return mailer. Your results are sent privately to your inbox.
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Everything's included. Step-by-step instructions, all collection materials and a pre-paid return mailer. No consult required, no gatekeeping.
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FAQs
Common questions
You order your at-home test kit online, it is posted to you within 1 to 3 business days, you collect your sample at home in 5 to 15 minutes and post it back in the pre-paid return mailer. Your sample goes to a NATA-accredited Australian laboratory and your results are sent privately to your inbox. No practitioner consult, GP referral or clinic visit is needed.
No. MediTests is a private, self-request service. You order online and receive your referral instantly. No GP visit required, no Medicare needed.
At-home test results typically take 2 to 4 weeks from when your sample reaches the lab. The exact timing depends on the test (microbiome mapping, methylation and metabolomics testing all require more advanced lab processes than standard bloodwork). You'll receive the full pathology report by email once it's ready.
Once you order, your kit is posted directly to your address within 1 to 3 business days. The kit includes everything you need (collection materials, step-by-step instructions, plus a pre-paid return mailer). No collection centre visit required.
No. The price you see includes the referral, the testing and your results. No consultation fees, no lab charges, no surprises.
Our team reviews every report. If anything stands out, we'll flag it and recommend taking your results to a practitioner (dietitian, naturopath or integrative GP) for proper interpretation in the context of your medical history.
Yes. Each kit comes with clear, step-by-step instructions designed to be simple to follow. Most samples take 5 to 15 minutes to collect. The instructions cover exactly what to do, when to do it, and how to package your sample for return. If anything's unclear, our team is available to help.
If your sample is compromised on collection or arrives at the lab unsuitable for testing, we'll send you a replacement kit at no additional charge. The instructions are designed to make collection easy and reliable, but mistakes happen and we've built the process to handle them. Just let us know.
Your kit includes a pre-paid return mailer. Once your sample is collected, package it as the instructions show and drop it at any Australia Post box or post office. Some samples have specific shipping requirements (e.g., temperature-sensitive samples) and instructions for these are included with the kit.
About this test
Questions about the Sleep & Stress Profile
Extra answers specific to this test.
It reports 6 results from an at-home saliva kit: cortisol and melatonin, each measured at three points across one day, morning, midday and midnight. Measuring each hormone three times shows the shape of your daily rhythm rather than a single level. Cortisol normally sits highest in the morning and falls through the day, and melatonin normally rises in the evening as part of the sleep and wake cycle, so a flattened or shifted pattern is the kind of thing a single blood draw cannot show.
No fasting is needed for a saliva sample. Timing is what matters instead: collect each of the 6 samples at the times set out in the kit instructions, and note the actual time on each one, since the whole test works by comparing levels across the day rather than reading a single figure.
This profile tracks cortisol and melatonin across a full day from saliva, 6 results in total, so it describes a rhythm. The Essential Hormone Profile measures 11 biomarkers from a single blood sample, including one cortisol result, so it describes a moment. Take this one if the daily pattern is the question and the hormone profile if you want breadth at a single point in time.
It suits anyone whose question is about the daily pattern of cortisol and melatonin rather than a single level, including shift workers and people whose routine has changed. It is collected at home from saliva with no blood draw and no collection centre visit, so it also suits anyone who would rather not attend in person.
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Get your blood test online today. No consult or referral required, with results in 24 to 48 hours. The easiest way to get a blood test in Australia.
No consult or referral required
24 to 48 hour results
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Hundreds of Australians have skipped the referral and the waiting, and taken control of their health with MediTests.
Rated 5 out of 5 stars
A very positive experience
I booked a blood test because my health insurance did not cover GP consultations. The referral form was emailed to me immediately, I walked into a collection centre the next morning and my results arrived the very next day. One result showed an elevated TSH level and because I was pregnant, a doctor from their Sydney office personally called me to talk it through. It made me feel they genuinely cared.
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Lisa Tong Verified review
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Could not have been better
I've been in remission from Graves Disease for a few years and suddenly had symptoms again. It was easy to choose and purchase the test I needed at a reasonable price and set up the appointment online for the next day. The lab tech was friendly and put me entirely at ease, and the results were delivered electronically within a day or two. Could not have been better.
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Robin Verified review
Rated 5 out of 5 stars
These guys are brilliant
Ordered the test, got the referral letter within 20 minutes. Got the test done on a Saturday and had the results by Sunday evening. Seriously efficient and very quick.
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Josh Cornell Verified review
Rated 5 out of 5 stars
Efficient from start to finish
I selected and ordered the tests I wanted online, then dropped into the clinic for the blood draw during my lunch break. The process was quick and efficient, and by lunchtime the following day my results had been emailed directly to me. Fast, convenient and hassle-free.
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Andrew Smith Verified review
Rated 5 out of 5 stars
Brilliant service
Absolutely loved that I got to choose what blood tests I wanted. There is a huge selection and the process was very simple. My results arrived very quickly in my email and I'd definitely use again and recommend to friends and family.
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Sara Braithwaite Verified review
Rated 5 out of 5 stars
Perfect for a busy family
As a busy working family, we are regular users of MediTests. Excellent, hassle free service for those in between tests or ongoing monitoring. Saves money through less costly doctors visits and time off work where appropriate. Highly recommend.
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Family user Verified review
Rated 5 out of 5 stars
Great pricing
Great pricing, with easy optional extras by checking a box for more comprehensive tests without having to get a top tier package like other companies offer. Fast, efficient and clear results.
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Jarren Verified review
Rated 5 out of 5 stars
Fantastic service
Excellent, convenient service and so easy to use. Amazingly quick results and a personalised service if needed. I could not fault any part of it.
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Angelique Richards Verified review
Rated 5 out of 5 stars
Great option and perfect service
Easy check out of the test on the website, easy to get the test done and results came quickly. Good to get an idea of any issues as a prep before seeing the GP.
K
Kris Verified review
Rated 5 out of 5 stars
Very simple and easy
It was very simple and easy. I got my results back within a few hours, a lot quicker than I was expecting. There were a lot of locations I could go to for my blood test. Highly recommend.
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Elizabeth Verified review
Rated 5 out of 5 stars
Very professional and quick
Very professional, very quick, I can't fault anything. I'll be happy to do another one when the time comes.
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Elliott Verified review
Rated 5 out of 5 stars
The ease of the whole experience
The ease of the whole experience, and the quick turnaround with results. Exactly what I was after.
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Troy Verified review
Rated 5 out of 5 stars
Reliable and no prescription needed
It is a reliable method to get a blood test without the doctor's prescription. The whole thing was easy to organise and I'd happily use it again.
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Naleenda Chamara Verified review
Rated 5 out of 5 stars
Very efficient and convenient
Very efficient and convenient from start to finish. Exactly the kind of easy, no-fuss service I was hoping for.
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Rafael Montero Verified review
Sleep & Stress Profile
The Sleep & Stress Profile is an at-home cortisol and melatonin test that measures the two hormones most central to sleep and stress. Rather than a single reading, it captures these across the day and night, which is what reveals your natural rhythm and where it may be disrupted.
It measures cortisol at multiple points from morning to night, alongside melatonin. Cortisol should follow a daily curve (higher in the morning, lower at night) and melatonin should rise in the evening to support sleep. When these rhythms are out of sync, the result is often poor or unrefreshing sleep, low energy and reduced stress resilience. Mapping the pattern across the day gives far more insight than a one-off measurement.
This is an at-home saliva collection kit, not a walk-in blood test. It needs no GP referral and no appointment. Your kit is delivered to you, you collect your samples at the set times at home and return them, and your results follow. For more on sleep and stress, Healthdirect Australia is a useful reference.
What we test for
Cortisol (Morning, Midday, Midnight): Cortisol is the body’s primary stress hormone and follows a natural daily rhythm. Levels are typically highest in the morning to support alertness and energy, gradually declining throughout the day and reaching their lowest point at night. Measuring cortisol at multiple times allows assessment of whether this rhythm is balanced or disrupted, which can influence sleep quality, stress tolerance and daytime fatigue.
Melatonin (Morning, Midday, Midnight): Melatonin is the hormone responsible for regulating the sleep–wake cycle. It normally rises in the evening to promote sleep and remains low during the day. Measuring melatonin at multiple time points helps assess whether production and timing are appropriate, as disruptions can be associated with difficulty falling asleep, poor sleep quality or altered sleep timing.
Reasons to get this test
The full diurnal cortisol and melatonin curve Six saliva samples across the day reveal the natural rise and fall of cortisol and melatonin. The depth no single blood draw can provide.
For when sleep is broken but you do not know why Trouble falling asleep, waking at 3 AM, low morning energy, anxious mornings or wired evenings. This panel reveals whether cortisol or melatonin is the cause.
Cortisol curve reveals burnout, anxiety and adrenal patterns A healthy cortisol curve peaks in the morning and drops by night. A flatlined or inverted curve is the biochemical signature of chronic stress and burnout.
Melatonin curve reveals circadian disruption Late melatonin onset, low midnight melatonin or daytime melatonin all explain sleep issues that standard blood tests miss entirely.
The longevity buyer’s diagnostic for stress aging Chronic cortisol dysregulation drives accelerated aging, insulin resistance, muscle loss and cognitive decline. One of the most underused longevity markers.
A simple at-home saliva kit, no lab visit needed Order online, collect six saliva samples across one day, post back in the pre-paid envelope. No clinic, no appointment, no referral.
How it works
1. Receive your referral instantly after purchase
2. Quick blood test at your local collection centre
3. Results to your inbox within 1-2 days
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