Testosterone Blood Test in Australia: What’s Checked and Why You Need Two

A blood test is the starting point for any conversation about testosterone. Symptoms like low energy, poor sleep, low mood or a drop in libido can have many causes, and blood tests help your doctor work out whether hormones are part of the picture.

This guide explains how a testosterone blood test works in Australia: what’s usually checked, how to prepare, where to go, and why OPTIV Health requires two separate blood tests before testosterone therapy (TRT) is considered.

Do you need a doctor’s request for a testosterone blood test?

In most cases, yes. In Australia, you usually need a pathology request form from a doctor to have your blood collected at a pathology centre. Your doctor decides which tests to order based on your symptoms, age, health history and goals.

At OPTIV Health, your doctor arranges this during your telehealth consult. Consults are by phone with an Australian-registered doctor, and there’s no need to visit a clinic first.

What does a testosterone blood test check?

“Testosterone test” sounds like one number, but a useful hormone health assessment looks at much more than that. The tests your doctor orders depend on your situation, but a typical hormone panel may include:

Hormone markers

• Total testosterone: the overall amount of testosterone in your blood.
• SHBG (sex hormone-binding globulin): a protein that binds testosterone. It affects how much testosterone is available for your body to use.
• Free testosterone (often calculated): an estimate of the unbound, active portion.
• LH and FSH: signalling hormones from the pituitary gland. They help your doctor work out why testosterone might be low.
• Oestradiol and prolactin: other hormones that can affect symptoms and help guide decisions.

General health markers

• Full blood count: including haemoglobin and haematocrit (red blood cell levels).
• Liver and kidney function.
• Cholesterol and blood sugar markers.
• Thyroid function and iron studies: because thyroid problems and low iron can cause symptoms that look a lot like low testosterone.
• PSA (prostate-specific antigen): for men, where appropriate for age and history.

At OPTIV Health, our standard panel covers fifty-plus markers across hormones, organ function, metabolic health and general health, so your doctor can see the whole picture rather than one figure in isolation.

If you’d like help understanding what these markers mean on a report, read our guide on how to understand hormone bloodwork. To see how total testosterone, free testosterone and SHBG fit together, read free vs total testosterone and SHBG explained.

Why OPTIV Health requires two blood tests

This is the question we’re asked most, so here’s the full answer.

Testosterone levels change through the day

Testosterone usually peaks in the morning and falls through the afternoon. A sample taken at 3pm can read noticeably lower than one taken at 8am in the same person. That’s why morning collection is recommended.

They also change from day to day

Even when collected at the same time of day, testosterone readings can vary between days. Poor sleep, a recent cold or flu, a big night out, a heavy training block, crash dieting or high stress can all push a single reading down.

One low reading isn’t a pattern

Australian clinical guidance, including from the Endocrine Society of Australia, recommends that a low morning testosterone reading be confirmed with a repeat test on a different day before testosterone therapy is considered. Two tests show whether a low level is consistent, or just a one-off. At OPTIV Health, these two tests are your two blood test panels for that year, not extra tests.

It protects you

Testosterone therapy is a long-term decision with real considerations, including effects on fertility and red blood cell levels. Basing that decision on a single reading would be guesswork. Requiring two tests means your doctor’s decision is based on evidence. If a service is willing to prescribe after one test, or none, treat that as a warning sign.

How to prepare for a testosterone blood test

A little preparation makes your blood test far more useful. Your doctor or the lab will give you specific instructions, but in general:

• Book a morning collection. Aim for early morning, ideally before 10am.
• Fast if asked. You may be asked to fast overnight, which usually means water only. Food can lower testosterone readings for a few hours.
• Get a normal night’s sleep. Don’t test after a night shift, a red-eye flight or a very short night.
• Avoid testing when you’re unwell. If you’ve got a cold, flu or another acute illness, reschedule.
• Skip the hard session. Avoid intense exercise the day before and the morning of your test.
• Tell your doctor about everything you take. This includes prescription medicines, supplements, and any past or current use of hormones or steroids. Some supplements, such as high-dose biotin, can interfere with some lab tests.
• Shift worker? Tell your doctor. Your body clock affects your hormone rhythm, so the best collection time may be different for you.

Where can you get a testosterone blood test?

You’ll attend a pathology collection centre with the request form from your doctor. Most collections take only a few minutes. OPTIV Health uses:

• Laverty Pathology in NSW
• Healius group laboratories in other states
• Australian Clinical Labs across Australia

All three have collection centres in capital cities and many regional areas. Many centres take walk-ins, but check opening hours, as morning slots can be busy.

Already had blood tests recently? If you’ve had suitable hormone bloods done in the last few months, have the report ready for your consult. Your doctor may be able to use it as one of your tests.

How much does a testosterone blood test cost in Australia?

With OPTIV Health:

• Your blood test panel is arranged through OPTIV Health. It’s a $229 blood test panel, and the price is shown at booking and on our testosterone therapy page. It’s usually done twice a year, and the two tests before starting TRT are your two panels for that year, not extra tests.
• You attend the collection centre named on your request form for your sample.
• Your consultation is an A$150 doctor’s consult. Consults are private, so no Medicare rebate applies.

See our cost page for how this works, or our TRT cost guide for the full picture.

What happens after your blood tests?

Once both tests are back, your doctor reviews them alongside your symptoms, history and goals. A doctor decides if treatment is suitable. Possible next steps include:

• discussing whether testosterone therapy may be clinically appropriate, including risks and a monitoring plan
• ordering further tests to look for an underlying cause
• focusing first on sleep, weight, alcohol, stress or training
• referring you to another specialist

If you do start treatment, blood tests continue. Regular monitoring checks your hormone levels and safety markers such as red blood cell levels, and your doctor sets the schedule. Between consults, our pharmacists and allied health team are there to answer questions.

Not sure if it’s time to get checked? Read when to seek a hormone assessment, or see the full process in how to get TRT in Australia.

What about testosterone blood tests for women?

Women produce testosterone too, but at much lower levels. Standard lab tests are less precise at those levels, and there’s no agreed “low” cut-off for women. Australian women’s health experts advise against routine testosterone testing to explain symptoms like fatigue or brain fog. A doctor can talk through your symptoms and decide which tests, if any, make sense for your hormone health.

Frequently asked questions

Do I need to fast for a testosterone blood test?

Often, yes. Many doctors recommend a morning, fasting collection, because food can lower testosterone readings for a few hours. Follow the instructions from your doctor or the lab.

What time should I get my testosterone tested?

Early morning, ideally before 10am. Testosterone usually peaks in the morning and falls later in the day, so morning collection gives a more reliable reading.

Why do I need two testosterone blood tests?

Testosterone levels vary from day to day as well as through the day. A single low reading may be a one-off, so OPTIV Health requires two separate blood tests, on different days, before testosterone therapy is considered. These two tests are your two blood test panels for that year, not extra tests.

Can I use blood tests I’ve already had done?

Possibly. If you’ve had suitable hormone bloods recently, bring the report to your consult. Your doctor will decide whether they can be used.

Which pathology labs does OPTIV Health use?

Laverty Pathology in NSW, Healius group laboratories in other states, and Australian Clinical Labs across Australia. Your blood test panel is arranged through OPTIV Health.

How much does the blood test panel cost?

OPTIV Health’s blood test panel is $229. It’s arranged through OPTIV Health, usually done twice a year, and the price is shown at booking. The two tests before starting TRT are your two panels for that year. If you already have suitable recent blood tests, your doctor may be able to use them. Consults are private, with no Medicare rebate.

Get your hormone health checked properly

If you’ve been putting off getting checked, a free 15-minute care call is an easy place to start. Our care team will explain how assessment and pathology work, what’s billed and by whom, and whether OPTIV Health is the right fit for you. Calls are Monday to Friday, 9am to 7pm Sydney time.

Book your free 15-minute care call

Learn more about testosterone therapy at OPTIV Health.

This article is general information, not medical advice. Speak with a doctor about your own situation.