SNP-Based Mapping vs Whole Genome Sequencing

SNP-Based Mapping vs Whole Genome Sequencing: Which is Right for You?

Two of the most common approaches to genetic testing are SNP-based mapping (used in consumer DNA tests like Genomepatri) and Whole Genome Sequencing (WGS). Both analyse your DNA — but they differ significantly in scope, cost, and clinical application. Here’s how to choose the right one.

What is SNP-Based Mapping?

SNP (Single Nucleotide Polymorphism) mapping analyses hundreds of thousands of specific, well-studied positions in your genome — known variants associated with health conditions, traits, ancestry, and drug responses. It’s fast, affordable, and clinically validated for population-level risk assessment.

• Coverage: 500,000–1,000,000+ SNPs across the genome

• Cost: Accessible — typically ₹7,999–20,000 in India

• Best for: Health risk screening, ancestry, nutrition, fitness, pharmacogenomics

• Turnaround: 6–8 weeks

What is Whole Genome Sequencing?

WGS reads every single base pair of your entire genome — all 3 billion base pairs, including both coding and non-coding regions. It provides the most complete genetic picture available, capturing rare variants, structural variations, and mutations in regulatory regions that SNP arrays would miss.

• Coverage: 100% of the genome

• Cost: Higher — typically ₹30,000–100,000+ in India

• Best for: Rare disease diagnosis, complex unresolved cases, research

• Turnaround: 8–12 weeks

Key Differences at a Glance

Which Should You Choose?

• Choose SNP mapping if you want to understand your health risks, ancestry, nutrition, fitness, and drug responses. It’s the ideal starting point for most people.

• Choose WGS if you have a suspected rare genetic disorder, have had inconclusive results from other tests, or need the most comprehensive analysis for a complex clinical situation.

If you’re just starting your genetic journey, SNP-based mapping is a powerful and accessible first step. For those seeking the full picture, Whole Genome Sequencing unlocks the deepest level of genetic insight available today.