What a saliva hormone test can show, and what it can’t

Not the well woman check your GP does

Search for a well woman test and much of what comes up is about something else: the preventive check-up a GP or women’s health clinic runs. The Better Health Channel lists what that usually covers.

A saliva hormone profile screens for none of these. If any are due, book them first. They matter more, and the bowel screening kit is free.

What is in the Well Woman profile

The Well Woman profile is NutriPATH’s Adrenocortex Stress Profile and Female Hormone Profile Basic (test code 1010). NutriPATH is an Australian integrative pathology lab, and this is what its sample report lists.

Two things worth knowing before you read one. The sample report’s reference ranges for the sex hormones are written for a premenopausal woman, which matters if you are in or past perimenopause. And labs update their panels, so the list on your own report is the one that counts.

Where saliva works well: cortisol

Cortisol follows a daily pattern. Pathology Tests Explained describes it rising in the early morning, peaking at about 8am and falling in the evening, and notes that infection, exercise and even being hot or cold can shift it.

Saliva is an accepted sample for cortisol. The Endocrine Society’s guideline on Cushing’s syndrome lists a late-night saliva cortisol among its first tests. That is a medical test a doctor orders for a medical question, not what this profile is for, but it shows saliva is taken seriously as a way to measure cortisol.

The catch is timing. Researchers who study the morning rise in cortisol agree, in their expert consensus guidelines, that results depend on sampling at exact times after waking. The Well Woman kit samples at set clock times instead, so the time you woke can change what the morning sample catches, and it is worth writing down.

For the wider comparison, including blood tests through your GP, our guide to how cortisol testing works goes further.

Where the evidence thins: oestrogen, progesterone and testosterone

• Saliva oestradiol doesn’t track blood well. A 2023 study, “Not within spitting distance”, found saliva immunoassays of oestradiol had poor validity for telling which phase of the cycle someone was in. An earlier study found saliva and blood oestradiol lined up only in postmenopausal women using oestrogen therapy.
• Hormone creams distort saliva. In one study, saliva progesterone rose within an hour of a single application of progesterone cream, while blood levels didn’t rise over the three hours measured. That is why the collection timing for hormone users, below, matters.
• One sample is one day. Oestrogen and progesterone move across the cycle, which is why NutriPATH’s instructions ask for a female hormone profile on its own to be collected on day 19 to 21. For the combined kit they give clock times but no cycle day, so ask whoever orders your test which day to collect.

The North American Menopause Society’s 2022 position statement says saliva and urine hormone testing to decide hormone therapy doses is unreliable and not recommended. If you use menopausal hormone therapy, the dose belongs with your prescriber, not a saliva result.

None of that makes the numbers meaningless. It makes them a snapshot to read carefully beside how you feel, not a measurement to act on alone.

Can a hormone test tell me if I’m in perimenopause?

Usually not, and that includes blood tests. Healthdirect says perimenopause is usually diagnosed based on your age, symptoms and period changes.

Jean Hailes is more direct: home blood or saliva tests sold to identify perimenopause or predict menopause are not recommended. We agree. The Well Woman profile can’t tell you whether you are in perimenopause, or when menopause will happen.

If you are younger than 45 and your periods are irregular or have stopped, Jean Hailes notes your doctor will probably measure your hormone levels to find out why. That is a GP conversation, not a saliva kit.

How to collect the samples properly

Most of what goes wrong with a saliva test happens before the tubes reach the lab. This is what NutriPATH’s saliva collection instructions ask.

The instructions in your own kit are the ones to follow, since labs revise them. The summary above is from version 3.0. NutriPATH’s test page gives 6 to 8am for the morning sample while those instructions say 8am, so check your kit.

Which question is yours?

A saliva profile is one tool. It helps to know which question you are really asking:

Is a saliva hormone test worth it?

It depends on the question. If you want a picture of your cortisol across an ordinary day, collected carefully, saliva is a reasonable way to get one. If you want a medical answer, a perimenopause answer or a dose for hormone therapy, it is the wrong tool, and your GP or prescriber is the right one.

After your results

If something sits well outside range, or your periods, bleeding or symptoms have changed, take the report to your GP.

Either way, Wellbeing George does not diagnose or treat any condition. Where a clinical nutritionist fits is alongside your medical care: reading the report beside your cycle, sleep, food, stress and medicines, working out which findings are worth acting on and which to leave alone, and turning that into changes you can keep.

If you have decided the profile is the right next step, our version is the Well Woman Test. Its page has the options, including having your report read with a clinical nutritionist.