Active Vitamin D (1,25 Dihydroxy) Blood Test
Active Vitamin D (1,25 Dihydroxy) Blood Test
Active Vitamin D (1,25 Dihydroxy) Blood Test
Active Vitamin D (1,25 Dihydroxy) Blood Test
Active Vitamin D (1,25 Dihydroxy) Blood Test
Active Vitamin D (1,25 Dihydroxy) Blood Test
Active Vitamin D (1,25 Dihydroxy) Blood Test
Active Vitamin D (1,25 Dihydroxy) Blood Test

Over 90k Biomarkers Tested

Active Vitamin D (1,25 Dihydroxy) Blood Test

$67.00 AUD

Concerned about bone health, frequent infections, or wondering if your body is properly activating vitamin D for optimal immune function and calcium absorption?

The Active Vitamin D Test, also called the Vitamin D (1,25 Dihydroxy) or calcitriol test, measures the active form of vitamin D that your body uses. This test may help check calcium balance, bone strength, muscle health, and immune function, especially when standard vitamin D tests don’t give the full picture.

Collection Location
Specimen Type

You will be emailed a referral to take to your local collection centre. If you ever have any questions, we're here to help.

4k+ Collection Locations

Personalised Reports

Early Detection

Private health tests

How It Works

Getting your health measured shouldn't be hard! We're here to help you every step of the way.

1
Order a test

Order a test

Order the private test that suits you and your goals. After ordering, you will receive your referral by email.

2
Collect the sample

Collect the sample

Attend one of our 4000+ partner collection centres throughout Australia. Search locations.

3
Receive your results

Receive your results

View all your lab results in your secure health dashboard. Easy!

Testimonials

What Our Customers Say

4.9
Average Rating
2,500+ Customers Tested
90,000+ Individual Biomarkers
O
Olga B. New South Wales

Convenient

Getting a referral was easy. Laverty pathology accepted it. Bloody Good offers an affordable and convenient way to check essential blood markers.

hs-CRP Blood Test
A
Adam O. ACT

Simple health checks in my control

I didn't know that private blood tests were an option. Tried this platform as the packages suited what I wanted for a good price. Easy to follow instructions, and super quick results. Platform provides more information than my gp's ever have on the tests and what the results meant. Would like more clinics to be able to test at (specifically Capital Pathology) but there is a decent network. Will continue to use.

The Performance Check
M
Marita S. Queensland

Bloody good test

Very comprehensive tests that have given me a good picture of my overall health.

The Bloody Good Test
L
Lukas C. NSW

Quick, easy, hassle free

Excellent service, quick, easy, hassle free, can recommend.

Testosterone Free/Total + SHBG
A
ABDUL S. QLD

Amazingly quick and efficient

Very easy to use. Love that it stores your blood tests.

The Performance Test
A
Andre D. QLD

5 Stars

Efficient and easy to use

Prostate-Specific Antigen (PSA)
W
Wayne NSW

5 Stars

Extremely helpful company

Calcium Blood Test
"I'm a little biased as I work here! However, I love that The Bloody Good Test tracks my health over time. After turning 40, I wanted to make sure I wasn't going to drop dead from something basic I should have known about earlier. Measuring all my core biomarkers each year gives me peace of mind my health is on the right track"
Cameron Smith Head of Ecommerce, Brisbane

Overview

The Active Vitamin D test measures calcitriol, which is like vitamin D's "final boss" – the most powerful form your body creates after processing regular vitamin D through your kidneys. Think of it as your body's master key for unlocking calcium absorption and bone strength. While regular vitamin D tests show how much vitamin D you're storing, this test reveals whether your body can actually activate and use it effectively, which is crucial for building strong bones, supporting your immune system, and maintaining healthy calcium levels.

This test becomes especially valuable when something seems off with your calcium levels or bone health, but standard vitamin D tests look normal. It's particularly helpful for people with kidney problems (since kidneys do the heavy lifting in vitamin D activation), unexplained high calcium levels, or complex bone disorders. If your results show low active vitamin D, it might mean your kidneys aren't converting stored vitamin D properly, while unusually high levels could indicate certain inflammatory conditions that overproduce this hormone-like vitamin.

Symptoms

Essential for individuals with kidney disease, complex vitamin D disorders, calcium abnormalities, or anyone needing detailed vitamin D metabolism and function assessment.

Questions

  • Active vitamin D (calcitriol) is the most potent form of vitamin D that regulates calcium absorption, bone metabolism, immune function, and cell growth throughout the body.
  • Regular vitamin D tests measure storage form (25-hydroxyvitamin D), while active vitamin D measures the most potent, hormonally active form that directly affects calcium and bone metabolism.
  • High levels may indicate granulomatous diseases, certain cancers, vitamin D intoxication, or conditions causing excessive vitamin D activation, requiring specialized evaluation.
  • Low levels may indicate kidney disease, genetic disorders affecting vitamin D metabolism, or problems with vitamin D activation, often requiring specialized treatment.
  • It's typically ordered for kidney disease, complex calcium disorders, granulomatous diseases, unexplained hypercalcemia, or when standard vitamin D testing is insufficient.
  • Treatment may include active vitamin D medications (calcitriol), addressing underlying kidney or metabolic problems, and careful monitoring of calcium levels.

Dr. Vu Tran
Bloody Good’s Chief Medical Officer

Biomarkers
  • Vitamin D (1,25 dihydroxy)

How to prepare

No special preparation required. Inform healthcare provider of all vitamin D supplements, calcium medications, and treatments that might affect vitamin D metabolism and active vitamin D levels.

After the test

Address abnormal active vitamin D through specialized endocrine or nephrology evaluation, appropriate vitamin D treatments, calcium management, and regular monitoring. Work with specialists as needed.

Your test results will be available in your private dashboard. If there are any urgent issues, we'll let you know so you can follow up with your health professional.

Understanding results

Results show active vitamin D levels compared to normal ranges. Abnormal levels may indicate vitamin D metabolism disorders, kidney problems, or calcium regulation issues requiring specialized evaluation.

Frequently Asked Questions

Most collection centres accept walk-ins. Some may require a booking - check details when you click on your chosen location.

If your test needs fasting, we’ll include that in your instructions after you order. Fasting usually means no food for 8–12 hours, but water is fine.

Just your pathology referral form (we email it to you)

Of course. Just maybe don’t bring the friend who faints at the sight of blood.

They’re the highly trained professionals who take your blood sample - with a steady hand and a sharp needle. They love blood, but don’t worry… they’re not vampires. Just legends who make blood tests quick, clean, and (almost) painless.

Some of our tests include Urine, Stool, Saliva and more. Each test will have a clear description on what sample you will need to give and instructions on how.