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Measures

Number of red blood cells in the blood

Identifies

Red blood cell disorders

Measures: Number of red blood cells in the blood

Identifies: Red blood cell disorders

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What is the maximum days the report can be obtained for the test

The maximum days for obtaining the report for the Vitamin A (Retinol) Test is typically 1-2 business days. However, this may vary depending on the laboratory or healthcare provider conducting the test.

What are the prerequisites for the test Vitamin A (Retinol) Test

  • Fasting for 8-12 hours prior to the test
  • Avoiding alcohol for at least 24 hours before the test
  • Informing the healthcare provider about any medications or supplements being taken
  • Not smoking for at least 24 hours before the test
  • Refraining from eating foods high in vitamin A, such as liver and dairy products, for 24 hours before the test

What are the measure values for the test Vitamin A (Retinol) Test

  • Normal range for adults: 30-65 micrograms per deciliter (mcg/dL) or 1.05-2.28 micromoles per liter (umol/L)
  • Deficiency range: Less than 20 mcg/dL or 0.70 umol/L
  • Excess range: Greater than 200 mcg/dL or 7.00 umol/L

What does this test Vitamin A (Retinol) Test identify?

  • Vitamin A (Retinol) Test identifies the level of retinol in the blood.
  • Retinol is a form of vitamin A that is essential for vision, immune function, and reproduction.
  • This test helps in diagnosing vitamin A deficiency or toxicity.
  • Low levels of retinol may indicate a deficiency, which can lead to night blindness, dry skin, and weakened immune system.
  • High levels of retinol may indicate toxicity, which can cause symptoms such as nausea, vomiting, and liver damage.

Why is this test Vitamin A (Retinol) Test taken?

The Vitamin A (Retinol) Test is taken to measure the levels of Vitamin A in the blood. Vitamin A is essential for normal vision, immune function, and reproduction. Deficiency of Vitamin A can lead to night blindness, dry eyes, and increased susceptibility to infections. On the other hand, excessive levels of Vitamin A can be toxic and lead to symptoms such as nausea, vomiting, and dizziness. This test is often ordered when a person shows signs and symptoms of Vitamin A deficiency or toxicity, or when monitoring the effectiveness of treatment for these conditions.

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