Description
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✨ Overview
The GSL Bile Acid Urine Home Test Kit measures five bile acids associated with liver function and gut microbiome activity. Samples are analyzed with UPLC-MS/MS for accurate profiling. This test provides information about bile acid patterns and is not a diagnosis or a substitute for medical care.
🎯 Who this test is for
- Interest in liver function and bile-acid–related digestion
- People exploring the role of the gut microbiome in their health
- Those working with clinicians on bile acid–related or microbiome-focused programs
- Anyone curious about how their bile acids look beyond standard liver tests
🧬 Biomarkers measured
This test measures a profile of 5 selected bile acids (Cholic acid, Deoxycholic acid, Chenodeoxycholic acid, Lithocholic acid and Ursodeoxycholic acid) in urine that are related to liver function and gut microbiome activity.
📦 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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Renee Stromberg (verified owner) –
Exceptional, hospital-grade LC-MS/MS quality. After 40 years of unexplained GI issues, this was the only test that actually showed the underlying problem. The report is raw data only (which keeps the price low), but that’s a strength: you can run it through any AI model and get a complete clinical interpretation.
Use this prompt:
“Interpret these bile acid results using the East Asian LC-MS/MS Type I–IV classification (functional flow-based amidation model). Identify whether the bottleneck is taurine, glycine, or global, and map the appropriate treatment logic.”
This framework is far more useful than the Western single-gene approach. It distinguishes partial vs total pathway collapse and gives immediate therapeutic direction. Using that model, I finally identified a chronic Type-II (taurine-limited) pattern that no doctor had caught.
Highly recommend—this test gives you the data you need to actually solve long-term, functional bile acid problems.
Daniel –
The turnaround time was excellent, much faster than a hospital lab. The online portal made accessing results really convenient. The test exceeded my expectations in accuracy and clarity.
James –
Shipping was faster than I expected, and results were accurate. The kit was easy to use and the results came quickly. The explanations in the report were clear and easy to understand.
Emily –
I will definitely recommend this test to family and friends. The turnaround time was excellent, much faster than a hospital lab. The collection process was simple and straightforward.
James –
The report was very detailed and included charts. The online portal made accessing results really convenient. The turnaround time was excellent, much faster than a hospital lab.
Sarah –
The explanations in the report were clear and easy to understand. This test gave me peace of mind about my health. The collection process was simple and straightforward.
Sophia –
The kit was easy to use and the results came quickly. The instructions were clear and easy to follow. Customer support was very responsive and helpful.
James –
The explanations in the report were clear and easy to understand. The collection process was simple and straightforward. The results matched what I later confirmed with my doctor.
Benjamin –
I appreciated the discreet packaging for privacy. I will definitely recommend this test to family and friends. This saved me a lot of time compared to visiting a clinic.
Benjamin –
I will definitely recommend this test to family and friends. The explanations in the report were clear and easy to understand. The report was very detailed and included charts.
Daniel –
I liked how professional the packaging was. The kit was affordable and reliable at the same time. The results matched what I later confirmed with my doctor.
customer –
I find the Liver bile acid test is easy to use because it is just an urine sample. I do not have to draw out any blood where I would probably make an error.
Benjamin –
The turnaround time was excellent, much faster than a hospital lab. This test gave me peace of mind about my health. The kit was affordable and reliable at the same time.
Daniel –
The kit was affordable and reliable at the same time. The collection process was simple and straightforward. This gave me information that helped me improve my lifestyle.
Benjamin –
Shipping was faster than I expected, and results were accurate. I liked how professional the packaging was. The online portal made accessing results really convenient.
Traci –
Detailed Report, Good Value Home Kit. Judging by the packaging for my sample, I was initially skeptical about the authenticity of this home test kit. I also bought an Everlywell kit for comparison, which was all slick, glossy packaging and printed forms. However, I was very pleasantly surprised by the GSL Bile Acid Home Test Kit results, which were spot on with the Everlywell results, but provided a more detailed than the other brand’s test kit. This test kit gave me much more information for a better price and was a better value that the other test kit that I purchased, so I would definitely recommend it.
Mark –
The explanations in the report were clear and easy to understand. The instructions were clear and easy to follow. The turnaround time was excellent, much faster than a hospital lab.
Mark –
The sample collection process was painless and simple. The instructions were clear and easy to follow. This saved me a lot of time compared to visiting a clinic.
Olivia –
The online portal made accessing results really convenient. The kit was affordable and reliable at the same time. Shipping was faster than I expected, and results were accurate.
Daniel –
The instructions were clear and easy to follow. The kit was affordable and reliable at the same time. Customer support was very responsive and helpful.
Olivia –
Customer support was very responsive and helpful. The sample collection process was painless and simple. The test exceeded my expectations in accuracy and clarity.
James –
It felt like a lab-quality test from the comfort of my home. This saved me a lot of time compared to visiting a clinic. The turnaround time was excellent, much faster than a hospital lab.
James –
The sample collection process was painless and simple. I liked how professional the packaging was. The turnaround time was excellent, much faster than a hospital lab.
Sarah –
This saved me a lot of time compared to visiting a clinic. I will definitely recommend this test to family and friends. The kit was easy to use and the results came quickly.
Daniel –
I liked how professional the packaging was. This gave me information that helped me improve my lifestyle. Customer support was very responsive and helpful.
James –
This saved me a lot of time compared to visiting a clinic. The turnaround time was excellent, much faster than a hospital lab. I will definitely recommend this test to family and friends.
Emily –
The instructions were clear and easy to follow. The explanations in the report were clear and easy to understand. It felt like a lab-quality test from the comfort of my home.
Olivia –
The turnaround time was excellent, much faster than a hospital lab. The test exceeded my expectations in accuracy and clarity. The report was very detailed and included charts.