Experiencing fatigue, muscle weakness, or neurological symptoms and want assessment of energy metabolism and thiamine status for optimal health?
The Vitamin B1 (Thiamine) Blood Test measures levels of thiamine, a vitamin that helps your body convert food into energy and supports nerve and heart function. Low B1 can cause fatigue, muscle weakness, nerve problems, and in severe cases heart complications. Adequate levels are important for energy and overall health.
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Bloody Good is a single portal for ordering, tracking, and reviewing on-demand health testing. Get started with three simple steps:
1
Book your test
Choose the testing that suits your goals. After ordering, you will receive your referral by email.
2
Collect your samples
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3
View your results
View your lab results and receive a personalised review from the secure Bloody Good platform.
The Vitamin B1 (Thiamine) Blood Test measures levels of thiamine, a vitamin that helps your body convert food into energy and supports nerve and heart function. Low B1 can cause fatigue, muscle weakness, nerve problems, and in severe cases heart complications. Adequate levels are important for energy and overall health.
Think of Vitamin B1 as your body's essential energy converter – it's the vitamin that transforms the carbohydrates you eat into fuel for your brain, heart, and muscles. This test measures your thiamine levels to see how well your body is managing this crucial conversion process, much like checking whether your car's engine is getting the right fuel mixture to run smoothly.
When your B1 levels are too low, your body's energy production system starts to break down, leading to fatigue, muscle weakness, heart problems, and even neurological issues like memory troubles or nerve damage. This test is especially valuable if you're experiencing unexplained tiredness, muscle weakness, or cognitive fog, or if you have conditions that put you at higher risk for deficiency, such as alcohol use disorders, digestive problems, or poor nutrition. By catching B1 deficiency early, you can address it with proper supplementation before it leads to more serious complications, helping restore your body's natural energy production and keeping your nervous system running at its best.
Reviewed by Dr. Vu Tran Bloody Good’s Chief Medical Officer
You may benefit from the Vitamin B1 (Thiamine) Blood Test
Essential for individuals with fatigue, neurological symptoms, suspected thiamine deficiency, or anyone needing comprehensive energy metabolism assessment.
Feeling tired all the time
Difficulty concentrating on tasks
Problems with short-term memory
Feeling sad or down most of the time
Muscle weakness in arms or legs
Memory problems or confusion
Confusion about time or date
Loss of sensation in extremities
How to prepare
No special preparation required. Inform healthcare provider of all B-vitamin supplements and medications that might affect thiamine levels or metabolism.
Understanding results
Results show thiamine levels compared to normal ranges. Low levels indicate deficiency requiring supplementation and investigation of underlying causes affecting thiamine status.
After the test
Address thiamine deficiency through appropriate supplementation, dietary improvements including thiamine-rich foods, addressing underlying causes, and regular monitoring to ensure adequate levels.
Frequently Asked Questions
Vitamin B1 (thiamine) is essential for energy metabolism, nervous system function, muscle function including the heart, and brain function, particularly in carbohydrate metabolism.
Signs include fatigue, muscle weakness, neurological symptoms, memory problems, heart palpitations, and in severe cases, beriberi or Wernicke-Korsakoff syndrome.
Causes include alcoholism, poor dietary intake, malabsorption disorders, increased needs during illness or pregnancy, and certain medications that interfere with thiamine absorption.
High-risk groups include people with alcoholism, eating disorders, malabsorption conditions, elderly individuals, and those with poor dietary intake or increased metabolic demands.
Good sources include whole grains, legumes, nuts, seeds, pork, fish, and fortified cereals, with processing and cooking reducing thiamine content.
Daily requirements vary but generally range from 1.0-1.2mg for adults, with higher needs during pregnancy, breastfeeding, illness, or periods of high energy expenditure.
Bloody Good is a single portal for ordering, tracking, and reviewing on-demand health testing.
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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)
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.
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