RNA Concentration: How to Measure It Right for Confident Results
Accurate RNA concentration is the backbone of gene expression studies, RNA-Seq library prep, RT-qPCR assays, and countless molecular biology workflows. Too little input leads to low signal and variability; too much introduces inhibition and wasted reagents. Between those extremes lie hidden pitfalls—contaminants from extraction, residual genomic DNA, sample degradation, and instrument limitations—that can mislead even experienced researchers. Understanding how to quantify RNA precisely, assess purity quickly, and troubleshoot anomalies ensures that every downstream decision is built on solid, reproducible data.
Fundamentals of Measuring RNA Concentration
At its core, measuring RNA concentration with absorbance follows Beer–Lambert law: A = εlc. For nucleic ac...