What is Sanger Sequencing? Sanger vs NGS Explained
Understanding the differences, technologies, and applications to make the right choice for your research.
Sanger vs NGS: Why It Matters
In the rapidly evolving field of genomics, understanding the difference between Sanger sequencing and Next-Generation Sequencing (NGS) is essential for researchers and clinicians across India. While Sanger remains the gold standard for accuracy in targeted applications, NGS has transformed large-scale genomic research with its massive throughput.
When to Choose Which?
Choose Sanger sequencing for:
- ✓ Small-scale projects, validation of NGS results, DNA barcoding, or when highest per-base accuracy is critical.
Choose Next-Generation Sequencing (NGS) for:
- ✗ Large-scale projects, whole genome/exome sequencing, metagenomics, or when deep coverage and cost-efficiency are required.
Detailed Comparison: Sanger vs NGS
- •Throughput — Sanger: Low (1 fragment at a time) | NGS: Very High (millions to billions of reads)
- •Read Length — Sanger: Long (500–1000 bp) | NGS: Short (50–600 bp) or Long (Nanopore/PacBio)
- •Accuracy — Sanger: Extremely High (~99.99%) | NGS: High with sufficient coverage
- •Cost per Base — Sanger: Higher for large projects | NGS: Much lower for high-volume projects
- •Best For — Sanger: Targeted sequencing, validation, barcoding, microbial ID | NGS: Whole genome, exome, transcriptome, metagenomics
- •Data Analysis — Sanger: Simple | NGS: Requires advanced bioinformatics
Need Professional Sanger or NGS Services in India?
At **Yaazh Xenomics**, Coimbatore's trusted genomics lab, we offer both high-quality Sanger Sequencing Services and advanced Next-Generation Sequencing (NGS) Solutions on multiple platforms including Illumina and Oxford Nanopore. Your Reliable Partner for Sanger Sequencing and Next-Generation Sequencing Services in India.
Ecosystem Comparison
Illumina
Best accuracy and ecosystem. Ideal for variant calling, RNA-Seq, and clinical applications.
Oxford Nanopore
Real-time, ultra-long reads. Best for de novo assembly, structural variants, and field sequencing.
MGI (DNBSEQ)
Highly cost-effective with performance comparable to Illumina.
PacBio HiFi
Exceptional accuracy in long reads. Excellent for complex genomes and phasing.
What is Sanger Sequencing?
- Sanger sequencing, also known as the chain-termination method, was developed by Frederick Sanger in 1977. It determines the precise order of nucleotides in a DNA fragment by using dideoxynucleotides (ddNTPs) that terminate DNA synthesis at specific bases.
- The resulting fragments are separated by capillary electrophoresis, producing a high-resolution chromatogram with accuracy up to 99.99%. It typically generates long, high-quality reads of 500–1000 base pairs, making it ideal for small-scale, targeted projects.
- Available Instruments:
- SeqStudio Flex Series - Modern benchtop system with excellent flexibility
- 3500 Series Genetic Analyzer - Most widely used mid-throughput instrument
- 3730xl Genetic Analyzer - High-throughput system for large-scale projects
What is Next-Generation Sequencing (NGS)?
Overview: Next-Generation Sequencing (NGS) enables massively parallel sequencing of millions to billions of DNA fragments simultaneously. Unlike Sanger sequencing, which processes one fragment at a time, NGS dramatically reduces cost and time per base, making genome-wide analysis feasible and affordable.
Illumina NovaSeq X / X Plus: Highest throughput short-read sequencing
Illumina NextSeq 2000: Flexible mid-throughput platform
Oxford Nanopore (PromethION, GridION, MinION): Real-time long-read sequencing
MGI DNBSEQ-T7 / T20: Cost-effective high-throughput alternative
PacBio HiFi Sequencing: Highly accurate long reads