Description
✨ Overview
- The GSL 4-in-1 Cortisol Urine Home Test Kit is an advanced panel that includes four individual cortisol test kits in one pack, allowing you and your provider to see how cortisol changes throughout the day or over a selected period of time. Urine samples are collected at four different time points, either within a single day or across multiple days as directed. Looking at several cortisol markers and their metabolites together over time can provide a more complete picture of cortisol production and breakdown. Your samples are analyzed using LC-MS/MS for detailed, quantitative profiling. This test provides information about cortisol metabolism and is not a diagnosis or a substitute for medical care.
🎯 Who this test is for
- Individuals who want to see how their cortisol changes across the day or over a short period of time
- People who have already done a single cortisol test and now want a deeper, multi-time-point view
- Those with complex stress, fatigue, or sleep concerns where timing of cortisol may matter
- People working with a practitioner who wants patterns and metabolites over time, not just one number
- Anyone curious about how their body produces and clears cortisol across multiple samples
🧬 Biomarkers measured
This test measures cortisol and a selection of its major urinary metabolites, giving a multi-analyte view of cortisol production and clearance.
📦 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.











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