Technical Resources & Guides
Practical guides, troubleshooting tips, and comparison articles to support your research.
His-Tag vs GST-Tag: Which Purification Tag Should You Use?
Jul 6, 2026
Key takeaways: His-tag is the default choice for most applications—small, inexpensive, and compatible with denaturing conditions. GST-tag offers higher specificity and can improve solubility, but its large size (26 kDa)…
ELISA Troubleshooting: Common Problems and Solutions
Jul 6, 2026
Key takeaways: Most ELISA failures trace back to three root causes—poor-quality reagents, insufficient optimization, or washing errors. This guide covers the 8 most common ELISA problems, their likely causes, and…
How to Choose Recombinant Proteins for ELISA: A Practical Guide
Jul 6, 2026
Key takeaways: Choosing the right recombinant protein for ELISA depends on four critical factors—expression system, purity level, fusion tags, and bioactivity validation. Making the wrong choice can lead to high…