Vitamin A Blood Test
Vitamin A Blood Test measures serum retinol to reveal your vitamin A status, helping clinicians tailor safe, effective care and protect your long term health. Designed with clinical precision and used by healthcare teams in trusted labs. Accredited labs follow strict quality standards to deliver reliable results. This helps you and your clinician make informed decisions about your vitamin A health.
Benefits & Features:
- Identifies vitamin A deficiency or excess, guiding personalised care.
- Results help clinicians tailor supplementation plans, reducing the risk of under or over treatment.
- Tests are conducted in accredited laboratories to ensure accuracy and consistency.
- Clear, easy to read results support practical decisions.
- Because vitamin A status affects many health areas, the test helps you feel confident about next steps, whether you're managing deficiency risk or adjusting a treatment plan.
Behind the scenes, this Vitamin A Blood Test is performed in CLIA-accredited laboratories, following strict quality controls. The measurement of serum retinol provides a clear snapshot of status, helping clinicians spot deficiency or excess and decide on the right next steps. The method has long been used to guide care in at risk groups, from premature infants to individuals with cystic fibrosis, ensuring safe, personalised management.
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Vitamin A
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Additional Information
Why take a test?
Most people do not need to take a vitamin A test. You may need to take a vitamin A test if you have certain conditions that can affect your body's ability to absorb or use vitamin A. These conditions include:
- Certain liver diseases
- Kidney disease
- Malabsorption syndromes such as celiac disease or Crohn's disease
- Certain genetic disorders
You may also need to take a vitamin A test if you are taking medications that can affect your vitamin A levels. These medications include:
- Corticosteroids
- Anticonvulsants
- Weight-loss surgery
If you are pregnant or breast-feeding, you may also need to take a vitamin A test to make sure you are getting enough of this important nutrient.








How to take your Welzo Test
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