Adults who show signs of deficiency, such as night blindness, dry skin, or poor wound healing. It may also be used to assess the nutritional status of individuals with malabsorption disorders, liver disease, or those on restrictive diets.
The box contains Test4A Cassette, buffer vial, transfer pipette, lancet, and instructions
Instructions Details
Vitamin A plays an important role in vision, immune function, skin health, and overall wellness. Deficiency or imbalance may affect patient health and treatment planning. Test4A provides a faster testing option that helps healthcare professionals assess Vitamin A status during patient visits.
Test4A uses NanoSpeed’s rapid diagnostic technology to provide quantitative Vitamin A results from a patient sample in a streamlined workflow.
NanoSpeed manufactures diagnostic products under internationally recognized quality standards, including ISO 13485 and MDSAP certification. Test4A is designed to support healthcare providers seeking reliable point-of-care diagnostic solutions.
Test4A quantitatively measures Vitamin A levels to help assess nutritional status and potential deficiency.
The test is designed for rapid point-of-care use, providing results much faster than traditional laboratory workflows.
Test4A is intended for professional use in clinics, laboratories, pharmacies, and wellness centers.
The workflow is designed to be simple and efficient, with minimal training required for healthcare professionals.
The test can quantitatively measure Vitamin A in the range 0.25 to 4.0 µmol/L.
You get the result in approximately 10 minutes from applying the blood sample.
While NanoSpeed doesn’t explicitly list sensitivity or specificity on the page, the quantitative format, calibrated reader, and narrow detection range aim for precise results. However, like any diagnostic test, accuracy can depend on sample handling, timing, user error, and biological variation.
Values below or above the detection range (0.25–4.0 µmol/L) may not be reliably quantified. Vitamin A levels can fluctuate with recent diet, fat absorption, liver function, or infection. As a rapid POC (point-of-care) test, it may not substitute fully for lab assays in complex medical cases.Improper sampling (insufficient or excessive blood volume, incorrect buffer mixing, timing errors) may lead to inaccurate results.
“Normal” retinol levels depend on population, age, sex, and local lab standards, but often lie within the detection range. Values below ~0.7 µmol/L are associated with deficiency in many settings. (You should compare with reference ranges used by clinical labs or public health guidelines.)
Low vitamin A suggests deficiency, which may stem from poor dietary intake, malabsorption (e.g. intestinal disorders), fat digestion issues, liver disease, or increased demand (e.g. in illness). Clinical evaluation and broader nutritional assessment will be needed.
Excessively high vitamin A levels may indicate over-supplementation, hypervitaminosis A, or disturbances in metabolism or liver storage. High levels might be harmful, so clinical correlation is essential.
Yes — we ship Quantitative Vitamin A Test kit internationally, including to India, Germany, and the UK. However, shipping availability, customs clearance, and local regulatory requirements may vary by country.
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