TAG FLEX-LB™ “TFLB”
A RUO Stabilizing Blood Collection Tube (BCT)
A New Standard in Pre-Analytical Stability
for Liquid Biopsy
Protect Your Science. Perfect Your Signal.
The single-tube solution that preserves cfDNA, cfRNA, and total RNA with unmatched thermal resilience and workflow efficiency.
Sample Degradation Begins at Collection. Your Results Are at Risk.
Pre-analytical variability is a primary source of failure in liquid biopsy. Sample degradation obscures critical biomarker signals with contaminants from dying cells, leading to irreproducible results and costly assay failures. Standard EDTA tubes demand processing within two hours to avoid significant genomic DNA contamination, while other stabilizing BCTs can introduce artifacts like cold-induced hemolysis and miRNA ratio instability, compromising data quality.
One Tube. Unwavering Integrity. From Collection to Analysis.

Unmatched Thermal Resilience
Protect irreplaceable samples from real-world shipping delays and temperature extremes where other tubes fail.

Superior Biomarker Integrity
Preserve cfDNA and cfRNA with exceptional fidelity, ensuring a stable baseline for the most sensitive assays.

Streamlined Workflow Efficiency
Save over 30 hours per 96-sample batch and decouple collection from processing to improve lab throughput.
Engineered for the Real World. Validated by Data.
Catastrophic Failure vs. Robust Protection
Preserve Sample Quality, Prevent Assay Inhibition
The Stable Foundation for Reliable Assay Normalization
| Feature | TAG FLEX-LB (TFLB) | Streck BCTs | Standard EDTA |
|---|---|---|---|
| Real-World Resilience (Temp Extremes) | Robust Protection | Compromised/Failure | Unstable |
| cfRNA/miRNA Integrity (Normalization) | Exceptional Stability | Unstable Ratio | Unsuitable |
| Hemolysis Control (Cold Storage) | Superior Prevention | Compromised | High Risk |
| Workflow Efficiency | Streamlined (Saves >30 hrs/plate) | Multi-Step | Urgent Processing |
The TFLB Advantage for Your Laboratory
For Liquid Biopsy Researchers
Maximize data integrity and enable complex, multi-site studies with confidence in your sample quality, regardless of shipping conditions.
For Assay Developers
De-risk development on stable samples and enhance assay sensitivity with a superior signal-to-noise ratio for both cfDNA and cfRNA.
For CLIA Lab Directors
Improve operational efficiency, reduce sample rejection rates, and lower overall costs with a competitively priced, single-tube solution.
Experience the New Standard in Pre-Analytical Stability.
Request a TFLB Evaluation KitDownload the Technical NoteWe develop patented reagents to improve molecular tests of solid tissues, blood tissue, and pathogens while supporting industry standard pathology protocols and high throughput lab systems.
ABOUT TRUCKEE APPLIED GENOMICS
TAG develops reagents to improve molecular diagnostics sample quality to accelerate the growth and promise of precision medicine..
TAG's proprietary sample storage and transport reagents are designed to optimize molecular assays with a wide range of applications such as next-generation sequencing, RT-PCR, immunoassays, liquid biopsies, and single cell and spatial genomics.
contact us at +1.775.237.8799, or email info@tagreagents.com.
Let’s discuss your
molecular testing
reagent needs.
Truckee Applied Genomics, Inc.
email: info@tagreagents.com
call or text: +1 775.237.8799
Located in the beautiful Tahoe / Reno region. Close to Bay Area tech resources, yet offering an outstanding quality of life.
275 Hill Street - Suite 290, Reno, NV 89501