Compare this test’s laboratory options
Vitamin A
Access Medical Labs · Quest Diagnostics2 test optionsFrom $62.64
Vitamin A
Access Medical Labs · Quest DiagnosticsCatalog information reviewed: August 24, 2026 by the Sunridge Medical clinical team.
What this laboratory test evaluates
Vitamin A (Retinol) Test
This test is crucial for checking Vitamin A levels in your body, which is essential for good vision, growth, and cell functions. High levels of Vitamin A can occur in cases like renal failure but usually don't lead to toxicity. However, they can be linked to bone fractures. On the other hand, low Vitamin A levels might indicate issues with fat absorption and are rarely due to not eating enough foods rich in Vitamin A.
What patients is this test right for?This test might be recommended if you have symptoms or conditions related to Vitamin A levels, such as vision problems, poor growth, or frequent bone fractures.
What type of sample is required for this test?2 mL serum
It's important to keep the sample protected from light.
Test ResourcesFor more information, please consult your healthcare provider.
Additional test information
Vitamin A is critical for vision, growth, and many cell functions. High concentrations of Vitamin A are seen with renal failure, but this is not associated with toxicity and excessive ingestion. High concentrations are associated with bone fractures. Low concentrations of Vitamin A are consistent with fat malabsorption and are rarely due to inadequate diet.
Collection and processing
- Sample type: Serum
- Fasting: Yes
- Estimated laboratory processing: Results should be available in 2 – 5 business days after the sample is collected
How Sunridge uses laboratory information
Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.
Before requesting this test
Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.
Common questions about this laboratory test
- What sample does this test require?
- The listed sample type is Serum. Confirm current collection instructions in the approved order.
- Does this test require fasting?
- The current catalog record lists fasting as: Yes. Follow the instructions supplied with the approved order.
- How long does laboratory processing usually take?
- Results should be available in 2 – 5 business days after the sample is collected. Timing can change after collection or if a laboratory requires additional review.
About this test
Vitamin A (Retinol) Test
This test is crucial for checking Vitamin A levels in your body, which is essential for good vision, growth, and cell functions. High levels of Vitamin A can occur in cases like renal failure but usually don't lead to toxicity. However, they can be linked to bone fractures. On the other hand, low Vitamin A levels might indicate issues with fat absorption and are rarely due to not eating enough foods rich in Vitamin A.
What patients is this test right for?This test might be recommended if you have symptoms or conditions related to Vitamin A levels, such as vision problems, poor growth, or frequent bone fractures.
What type of sample is required for this test?2 mL serum
It's important to keep the sample protected from light.
Test ResourcesFor more information, please consult your healthcare provider.
Additional details
Vitamin A is critical for vision, growth, and many cell functions. High concentrations of Vitamin A are seen with renal failure, but this is not associated with toxicity and excessive ingestion. High concentrations are associated with bone fractures. Low concentrations of Vitamin A are consistent with fat malabsorption and are rarely due to inadequate diet.
Highlighted health areas
- Nutrition
Biomarkers and report focus
The exact analytes and report format can change. Confirm the current contents in the Fullscript order before payment.
- Vitamin A (Retinol)