Description
✨ Overview
The GSL Vitamin D Home Test Kit measures vitamin D levels from a urine sample collected at home. Vitamin D plays roles in bone health, immune function, and overall wellness. Samples are analyzed by LC-MS/MS for accurate quantitation. This test provides information about vitamin D status and is not a diagnosis or a substitute for medical care.
🎯 Who this test is for
- People who spend little time in sunlight or use heavy sun protection
- Those taking vitamin D supplements who want to check their level
- Individuals with interest in bone, immune, or overall wellness support
- Anyone curious about their vitamin D status throughout the year
🧬 Biomarkers measured
This test measures vitamin D, typically reported as 25-hydroxyvitamin D, in a small blood sample.
- 📦 What’s included
- 1 Collection tube
- 1 Dropper
- Sample form
- Pre-paid return mailer
- Simple step-by-step instructions
- Personalized lab report with reference ranges and interpretation notes
⚙️ How it works
- Collect your sample at home using the kit instructions.
- Seal it in the provided tube and mail it back in the prepaid envelope.
- Receive your secure online report by email/PDF with easy-to-read charts and reference ranges.
🏥 Why GSL Lab?
- Dedicated steroidomics and biomarker laboratory – not a generic big-box lab
- Kit assembled in the USA
- Samples analyzed in our California-based LC-MS/MS lab
- UPLC-MS/MS technology for high sensitivity and specificity
- Methods similar to those used in many research and hospital laboratories
- Free shipping both ways and a 60-day satisfaction guarantee
❓ FAQ
How long does it take to get my results?
Once your sample arrives at our lab, results are typically ready within 2–10 business days.
How will I receive my results?
Results are delivered by email/PDF with easy-to-read charts and reference ranges.
Do medications or supplements affect my results?
Some medications and supplements can influence biomarker levels. Do not change or stop any prescription medication without talking to your healthcare provider. If you’re unsure, list your current medications on the form so you and your provider can interpret the results appropriately.
Is this test a substitute for seeing my doctor?
No. These at-home kits are meant to give you information about your biomarker levels that you can discuss with a healthcare professional. They do not diagnose, treat, cure, or prevent any disease.
⚠️ Medical Disclaimer
Important: These at-home tests are intended for informational, educational, and research purposes only. They do not diagnose, treat, cure, or prevent any disease, and they are not a substitute for professional medical advice, diagnosis, or care. Always talk to your healthcare provider about your results and any questions you may have.
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Sophia –
The collection process was simple and straightforward. This gave me information that helped me improve my lifestyle. The kit was affordable and reliable at the same time.
Sophia –
The explanations in the report were clear and easy to understand. The report was very detailed and included charts. I will definitely recommend this test to family and friends.
Olivia –
The instructions were clear and easy to follow. I will definitely recommend this test to family and friends. The test exceeded my expectations in accuracy and clarity.
Emily –
The collection process was simple and straightforward. The test exceeded my expectations in accuracy and clarity. The sample collection process was painless and simple.
Olivia –
This gave me information that helped me improve my lifestyle. The test exceeded my expectations in accuracy and clarity. This saved me a lot of time compared to visiting a clinic.
James –
The instructions were clear and easy to follow. Shipping was faster than I expected, and results were accurate. I liked how professional the packaging was.
Sophia –
This gave me information that helped me improve my lifestyle. Customer support was very responsive and helpful. The turnaround time was excellent, much faster than a hospital lab.
James –
This gave me information that helped me improve my lifestyle. I will definitely recommend this test to family and friends. I liked how professional the packaging was.
Benjamin –
The explanations in the report were clear and easy to understand. It felt like a lab-quality test from the comfort of my home. I will definitely recommend this test to family and friends.
Benjamin –
The turnaround time was excellent, much faster than a hospital lab. I will definitely recommend this test to family and friends.
Mark –
I will definitely recommend this test to family and friends. The collection process was simple and straightforward. The instructions were clear and easy to follow.
James –
The report was very detailed and included charts. This saved me a lot of time compared to visiting a clinic.
Benjamin –
The explanations in the report were clear and easy to understand. This gave me information that helped me improve my lifestyle. The online portal made accessing results really convenient.
Emily –
Customer support was very responsive and helpful. It felt like a lab-quality test from the comfort of my home.
Sophia –
Shipping was faster than I expected, and results were accurate. I appreciated the discreet packaging for privacy. The sample collection process was painless and simple.
Emily –
The turnaround time was excellent, much faster than a hospital lab. It felt like a lab-quality test from the comfort of my home. The explanations in the report were clear and easy to understand.
Mark –
The kit was easy to use and the results came quickly. The report was very detailed and included charts. This saved me a lot of time compared to visiting a clinic.
Emily –
The results matched what I later confirmed with my doctor. This gave me information that helped me improve my lifestyle. I appreciated the discreet packaging for privacy.
Olivia –
The results matched what I later confirmed with my doctor. This gave me information that helped me improve my lifestyle. The test exceeded my expectations in accuracy and clarity.
Mark –
The instructions were clear and easy to follow. Shipping was faster than I expected, and results were accurate. The explanations in the report were clear and easy to understand.
Emily –
The instructions were clear and easy to follow. The results matched what I later confirmed with my doctor. This saved me a lot of time compared to visiting a clinic.
Olivia –
The test exceeded my expectations in accuracy and clarity. I will definitely recommend this test to family and friends. I appreciated the discreet packaging for privacy.
Olivia –
The kit was easy to use and the results came quickly. The results matched what I later confirmed with my doctor. I will definitely recommend this test to family and friends.
James –
The test exceeded my expectations in accuracy and clarity. The collection process was simple and straightforward. I will definitely recommend this test to family and friends.
Sarah –
It felt like a lab-quality test from the comfort of my home. Customer support was very responsive and helpful. The online portal made accessing results really convenient.