Description
✨ Overview
The GSL Vitamin D Blood Home Test Kit measures vitamin D levels from a small blood 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.
Sophia –
This test gave me peace of mind about my health. The online portal made accessing results really convenient. This saved me a lot of time compared to visiting a clinic.
Daniel –
The turnaround time was excellent, much faster than a hospital lab. This test gave me peace of mind about my health. The kit was easy to use and the results came quickly.
Mark –
The online portal made accessing results really convenient. The collection process was simple and straightforward. The instructions were clear and easy to follow.
Sophia –
Customer support was very responsive and helpful. The collection process was simple and straightforward. The online portal made accessing results really convenient.
Sophia –
The results matched what I later confirmed with my doctor. This gave me information that helped me improve my lifestyle. The explanations in the report were clear and easy to understand.
Emily –
Shipping was faster than I expected, and results were accurate. The results matched what I later confirmed with my doctor. Customer support was very responsive and helpful.
Olivia –
The online portal made accessing results really convenient. The test exceeded my expectations in accuracy and clarity. The kit was easy to use and the results came quickly.
Mark –
The turnaround time was excellent, much faster than a hospital lab. The results matched what I later confirmed with my doctor. I will definitely recommend this test to family and friends.
Benjamin –
I appreciated the discreet packaging for privacy. This gave me information that helped me improve my lifestyle.
Sophia –
The explanations in the report were clear and easy to understand. The collection process was simple and straightforward. This gave me information that helped me improve my lifestyle.
Benjamin –
The explanations in the report were clear and easy to understand. This saved me a lot of time compared to visiting a clinic. Customer support was very responsive and helpful.
Olivia –
The turnaround time was excellent, much faster than a hospital lab. Customer support was very responsive and helpful. This saved me a lot of time compared to visiting a clinic.
Sophia –
The collection process was simple and straightforward. This test gave me peace of mind about my health. I appreciated the discreet packaging for privacy.
Sarah –
The online portal made accessing results really convenient. The results matched what I later confirmed with my doctor. This saved me a lot of time compared to visiting a clinic.
Mark –
The kit was affordable and reliable at the same time. The online portal made accessing results really convenient. I will definitely recommend this test to family and friends.
Sarah –
The instructions were clear and easy to follow. I will definitely recommend this test to family and friends. Customer support was very responsive and helpful.
Benjamin –
This test gave me peace of mind about my health. The turnaround time was excellent, much faster than a hospital lab. The report was very detailed and included charts.
Mark –
This test gave me peace of mind about my health. This saved me a lot of time compared to visiting a clinic. It felt like a lab-quality test from the comfort of my home.
James –
I liked how professional the packaging was. It felt like a lab-quality test from the comfort of my home. The test exceeded my expectations in accuracy and clarity.
Daniel –
The turnaround time was excellent, much faster than a hospital lab. It felt like a lab-quality test from the comfort of my home. Customer support was very responsive and helpful.
Daniel –
This test gave me peace of mind about my health. This saved me a lot of time compared to visiting a clinic. The test exceeded my expectations in accuracy and clarity.
Mark –
The instructions were clear and easy to follow. The kit was affordable and reliable at the same time. The online portal made accessing results really convenient.
Emily –
The kit was affordable and reliable at the same time. The report was very detailed and included charts. I will definitely recommend this test to family and friends.
Sophia –
I appreciated the discreet packaging for privacy. I liked how professional the packaging was. It felt like a lab-quality test from the comfort of my home.
James –
Shipping was faster than I expected, and results were accurate. The results matched what I later confirmed with my doctor. The sample collection process was painless and simple.