Vitamin A

The Vitamin A blood test is an essential diagnostic tool used to measure retinol levels in the blood, providing crucial insights into an individual's vitamin A status. Vitamin A is vital for numerous bodily functions, including vision, skin health, bone formation, immune function, and reproduction. This test helps diagnose both vitamin A deficiency and toxicity, conditions that can significantly impact health. Patients are typically advised to fast for 12 to 14 hours and avoid alcohol for 24 hours before the test to ensure accurate results. Blood samples are collected via venipuncture and analyzed using advanced techniques like High Performance Liquid Chromatography (HPLC) or Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS). Normal retinol levels range from 20 to 60 mcg/dL, with values below indicating deficiency and above suggesting toxicity. The test is crucial for diagnosing deficiencies, detecting toxicity, monitoring therapy, and screening for conditions affecting vitamin A absorption, ensuring effective management and optimal health.

Price of test:£121

The lowest price from the last 30 days: £121

Awaiting result:

2 days

Collect material:

Blood

Prepare:

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Purpose of the test

The Vitamin A blood test is essential for evaluating retinol levels, crucial for vision, skin, bones, immunity, and reproduction. It diagnoses deficiency and toxicity, impacting health significantly.

- Purpose: Assesses vitamin A nutritional status, identifying deficiencies or excesses.
- Preparation: Requires 12-14 hours fasting and 24-hour alcohol abstinence.
- Collection: Blood drawn via venipuncture, handled to prevent contamination.
- Analysis: Uses HPLC or LC-MS/MS for precise retinol quantification.
- Interpretation:
- Normal: 20-60 mcg/dL.
- Low: Below 20 mcg/dL, indicating deficiency.
- High: Above 120 mcg/dL, indicating toxicity.

Who Should Get Tested

The Vitamin A blood test is essential for assessing retinol levels, crucial for vision, skin health, and immune function. It diagnoses both deficiency and toxicity, impacting health significantly. Key points include:

- Purpose: Evaluates vitamin A status to manage related conditions.
- Preparation: Requires fasting and abstaining from alcohol.
- Collection: Blood drawn via venipuncture, handled carefully.
- Interpretation:
- Normal: 20-60 mcg/dL.
- Low: Below 20 mcg/dL, indicating deficiency.
- High: Above 120 mcg/dL, indicating toxicity.
- Applications: Diagnoses deficiency, detects toxicity, monitors therapy, and screens for related conditions.

Blood Test Preparation Guidelines

Time of day

It is recommended to schedule your appointment for blood tests in the morning hours between 7:00-10:00.

Fasting

It is recommended to fast for approximately 12 hours before blood sampling. The last meal of the previous day should ideally be consumed around 6:00 p.m. On the day before the test, avoid heavy and fatty meals as well as alcohol.

Stay hydrated

Drinking water prior to testing can help with sample collection.

Other factors

Tests should not be performed after a sleepless night or intense physical activity. It is recommended to avoid exercise and stress immediately before blood collection and to not smoke. A short rest is recommended.

Medications and supplements:

Blood samples should be collected before the morning dose. Some drugs can interfere with test results. Consult with your doctor whether you can delay your dose because of lab tests.

Biotin supplements:

High doses of biotin supplements can affect test results, causing false elevation or reduction. It's recommended to avoid taking biotin for at least 72 hours before blood collection. If you are taking biotin, inform the personnel collecting the blood so that they can provide specific instructions.

Interpreting Test Results

Understanding test results for the Vitamin A blood test is essential for managing health effectively. This test measures retinol levels to diagnose deficiencies or toxicities, impacting vision, skin, and immune health. Here's a brief guide:

- Normal Values: 20-60 mcg/dL indicates adequate vitamin A levels.
- Low Values: Below 20 mcg/dL suggests deficiency, leading to night blindness and skin issues.
- High Values: Above 120 mcg/dL indicates toxicity, causing symptoms like dizziness and liver dysfunction.

Accurate interpretation aids in effective treatment and maintaining optimal health.

Price of test:£121

The lowest price from the last 30 days: £121

AI-Powered Insights and Expert Validation

Advanced AI Interpretation

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Language Model and Trusted Sources

At the core of Diagu's AI system is an advanced language model, engineered to transform complex medical data into clear, comprehensible, and informative descriptions. This model is adept at articulating detailed test analyses in a way that is accessible to both healthcare professionals and patients. The model's development involved the meticulous processing of high-quality sources, including reputable medical websites, renowned medical textbooks, and peer-reviewed research papers. This ensures that the language used in test descriptions is not only accurate and informative but also up-to-date with the latest medical findings and trends. By leveraging this rich tapestry of trusted sources, our AI system provides a deeper understanding of each test, fostering informed decision-making and enhanced patient care.

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