Experiencing muscle cramps, irregular heartbeat, or fatigue and want to assess magnesium levels for optimal muscle and nerve function?
The Magnesium Blood Test measures magnesium, a mineral essential for energy production, nerve function, and healthy muscles and bones. Low magnesium may be linked to cramps, fatigue, or irregular heartbeat, while healthy levels support strong muscles, steady energy, and heart health.
You will be emailed a referral to take to your local collection centre. If you ever have any questions, we're here to help.
Think of magnesium as your body's ultimate multitasker – it's like having a dedicated assistant that keeps over 300 different processes running smoothly, from helping your muscles contract and relax to keeping your heart beating steadily and your energy levels up. The Magnesium test measures how much of this essential mineral is circulating in your blood, giving you a window into whether your body has enough of this crucial nutrient to power everything from your morning workout to your nightly wind-down.
When your magnesium levels are too low, your body sends some pretty clear signals – think muscle cramps that wake you up at night, feeling unusually tired despite getting enough sleep, or experiencing an irregular heartbeat. This test is particularly valuable if you've been dealing with persistent muscle twitches, unexplained anxiety, or cardiovascular issues, as low magnesium often flies under the radar but can significantly impact how you feel day-to-day. By checking your magnesium status, you'll know whether boosting this mineral through diet or supplements could help you feel more energized, sleep better, and keep your muscles and heart functioning at their best.
Reviewed by Dr. Vu Tran Bloody Good’s Chief Medical Officer
You may benefit from the Magnesium Blood Test
Essential for individuals with muscle problems, cardiovascular symptoms, neurological concerns, or anyone needing comprehensive magnesium and mineral assessment.
Muscle cramps or spasms
Hand tremors at rest
Leg tremors or restless legs
Feeling anxious or worried most days
Trouble sleeping or insomnia
Heart palpitations or racing heart
Irregular heartbeat or heart skipping
Severe headaches that interfere with activities
Headaches that worsen with movement
Headaches triggered by stress
Dizziness or vertigo
Hand tremors when trying to use hands
Muscle twitching or fasciculations
Hyperactivity or inability to sit still
Neck pain or stiffness
Generalized muscle aches
Fibromyalgia-like widespread pain
Reduced grip strength
Muscle weakness
How to prepare
No special preparation required. Inform healthcare provider of magnesium supplements, medications, and any factors that might affect magnesium levels or interpretation.
Understanding results
Results show magnesium levels compared to normal ranges. Low levels may indicate magnesium deficiency requiring supplementation and dietary modifications.
After the test
Address magnesium deficiency through magnesium supplementation, dietary modifications to include magnesium-rich foods, and treatment of underlying causes. Work with specialists for complex cases.
Frequently Asked Questions
Magnesium is an essential mineral involved in over 300 enzymatic reactions, crucial for muscle, nerve, heart function, and energy production.
Symptoms may include muscle cramps, twitching, irregular heartbeat, fatigue, anxiety, headaches, and difficulty sleeping.
Causes include inadequate dietary intake, gastrointestinal disorders, certain medications, alcohol abuse, and conditions that increase magnesium loss.
Treatment typically includes magnesium supplements, dietary modifications to include magnesium-rich foods, and addressing underlying causes.
Good sources include leafy greens, nuts, seeds, whole grains, legumes, fish, and dark chocolate.
While rare from food sources, excessive supplementation can cause diarrhea, nausea, and in extreme cases, more serious complications.
You will be emailed a referral to take to your local collection centre. If you ever have any questions, we're here to help.
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1
Book your test
Choose the testing that suits your goals. After ordering, you will receive your referral by email.
2
Collect your samples
Have your sample collected at one of our 4000+ partner collection centres.
3
View your results
View your lab results and receive a personalised review from the secure Bloody Good platform.
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Frequently Asked Questions
Find answers to common questions about our products and services.
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)
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