Hormone Testing

Growth Hormone Provocation Test

This test is used to measure whether your body produces sufficient growth hormone to meet your needs and keep you healthy.

How is the test performed?

The test is performed in the NIIM IV Clinic in Hawthorn, Melbourne, following a referral from your doctor. An intravenous cannula (sterile plastic tube) is inserted into your vein, usually at the elbow or back of the hand and remains fixed over the course of the test.

A blood sample is drawn from the cannula to test initial levels of growth hormone, then specific medications will be administered that should stimulate the body to release growth hormone. Following the administration of medication, more blood samples are collected over the next few hours.

The duration of the entire test process is approximately four hours.

How to prepare for the growth hormone provocation test.

As the food you eat can affect your test results you must fast for 10-12 hours prior to the test, but you can continue to drink water.

Some medications may affect test results, such as growth hormone, cortisone, and steroid inhalers. Please ensure that you follow your doctor’s instructions if you are required to cease any medication on the days leading up to, and day of, your test.

Short Synacthen Test (ACTH stimulation test)

This test helps your doctor to evaluate how well your adrenal glands secrete the hormone cortisol and may be used where adrenal fatigue or insufficiency is suspected.

Healthy adrenal glands secrete cortisol in response to a hormone produced in the brain called ACTH. This test uses a drug that acts like ACTH in the body, called Synacthen, to stimulate the adrenal glands to secrete cortisol.

How is the test performed?

The test is performed in the NIIM IV Clinic in Hawthorn, Melbourne.

A blood sample will be taken to measure baseline cortisol levels, after which Synacthen is adminsitered via injection. After 30 minutes, a second blood sample will be collected which will be used to determine the levels of cortisol secreted in response to the Syncathen.

How to prepare for the short Synacthen test.

In most cases you will not need to do anything to prepare for the test. Unless your doctor advises otherwise, continue to take your usual medications and do not fast.

The short synacthen test must be performed in the morning to determine accurate cortisol levels.

Other hormone tests

Other hormone tests are routinely performed at the NIIM IV Clinic in Hawthorn, including:

  • Testosterone
  • Oestrogen
  • DHEA
  • Cortisol

Please note some hormone tests require a referral.

How to make an appointment

To make an appointment for a hormone test, please contact NIIM Clinic reception on (03) 9804 0646.