# Improved Step-by-Step qPCR Method for Absolute Telomere Length Measurement

## TL;DR

This paper presents an improved qPCR method for accurately measuring absolute telomere length, which is important for studying aging and disease.

## Contribution

The study introduces novel primers and a calibration method for more accurate and high-throughput telomere length measurement.

## Key findings

- The method was validated using DNA samples from 17 adults and 9 newborns, showing high linearity and reproducibility.
- The technique enables rapid, cost-effective, and accurate measurement of telomere length in kilobases.
- This approach supports large-scale studies and improves clinical diagnostics related to telomere biology.

## Abstract

Telomere length is a crucial marker of cellular aging and genomic stability, with significant implications for age-related diseases and cancers. This study introduces an improved quantitative PCR (qPCR) method for measuring absolute telomere length, addressing the need for accurate and high-throughput assessment in both clinical and research settings. Novel primers were designed for the single-copy gene interferon beta (IFNB1) to serve as an internal control, alongside a series of single-stranded oligonucleotide standards to establish a calibration curve. This approach allows for precise quantification of telomere length in kilobases per single copy gene copy number per chromosome. We validated this method using DNA samples from peripheral blood and buccal swabs from 17 healthy human volunteers, as well as umbilical cord blood from 9 healthy newborn babies, demonstrating its high linearity and reproducibility. Our findings indicate that this improved qPCR technique provides a rapid, cost-effective, and accurate means of measuring absolute telomere length, thereby facilitating large-scale studies and enhancing clinical diagnostics related to telomere biology.