CRISPR Off-the-Shelf Library
Ready to Use — Rapidly Launch Your Genetic Screening Project
In life science research, time is competitive. GeneRulor's CRISPR Off-the-Shelf Libraries are pre-built, validated, and ready to ship — from order to experiment in 1-2 weeks.
1. What is a CRISPR Off-the-Shelf Library?
Pre-built, rigorously QC-tested sgRNA libraries ready for immediate use. Covering human and mouse genome-wide KO, CRISPRi, and CRISPRa, plus pathway sub-libraries. All NGS-validated for uniform coverage.

Figure 1 Comparison of CRISPR-KO, CRISPRi, and CRISPRa Libraries
2. Core Advantages of Off-the-Shelf Libraries
2.1 Ultra-Fast Delivery
Library plasmid: Delivered in 1-2 weeks
Lentiviral library: Delivered in 2-3 weeks
Saves >75% waiting time vs. 6-8 weeks for custom libraries
2.2 Stringent Quality Assurance
Every batch undergoes:
NGS deep sequencing: Uniform sgRNA distribution (Gini coefficient <0.2)
Viral titer testing: Guaranteed ≥10^8 TU/mL
Functional validation in standard cell lines
Batch consistency testing for reliable inter-lot performance
2.3 Outstanding Cost-Effectiveness
Scale production lowers per-unit cost
No custom design fees
Volume discounts for multi-library orders
30-50% lower total cost vs. custom libraries
2.4 Performance-Validated
All libraries functionally validated in standard cell lines
Essential gene detection rate >90%; false positive rate <5%
Detailed validation report and quality certificate provided
Technical support team available at all times
2.5 Flexible Options
Genome-wide libraries: All protein-coding genes
Sub-libraries: Kinases, transcription factors, epigenetic regulators, and more
Multiple vector systems: lentiCRISPRv2, lentiGuide, and more
Available as plasmid or virus
3. GeneRulor Off-the-Shelf Library Product Line
Library Name | Vector | Details |
Mouse Genome-Wide SAM Activation Library (Three-Plasmid System) | Lenti sgRNA(MS2)_puro,Lenti-dcas9-VP64-Blast,Lenti MPHv2 | 23439 Genes,69225 sgRNAs |
Mouse GeCKO library A (Single-Plasmid System) | LentiCRISPRv2 | 20,611 Genes; 67,405 sgRNAs (1,000 controls) |
Mouse Genome-Wide KO Library A (Dual-Plasmid System) | LentiGuide-Puro | 20,611 Genes + 1,145 miRNAs; 67,405 sgRNAs |
Mouse Genome-Wide KO Library B (Dual-Plasmid System) | LentiGuide-Puro | 20,611 Genes; 62,804 sgRNAs |
Human Genome-Wide KO Library A (Single-Plasmid System) | LentiCRISPRv2 | 19,050 Genes + 1,864 miRNAs; 65,383 sgRNAs (1,000 controls) |
Human Genome-Wide KO Library B (Single-Plasmid System) | LentiCRISPRv2 | 19,050 Genes; 58,028 sgRNAs (1,000 controls) |
Human Genome-Wide KO Library A (Dual-Plasmid System) | LentiGuide-Puro | 19,050 Genes + 1,864 miRNAs; 65,383 sgRNAs (1,000 controls) |
Human Genome-Wide KO Library B (Dual-Plasmid System) | LentiGuide-Puro | 19,050 Genes; 58,028 sgRNAs (1,000 controls) |
Human Genome-Wide Activation Library A (Dual-Plasmid System) | pXPR_502,Lenti-dcas9-VP64-Blast | 18,885 Genes; 56,762 sgRNAs (496 controls) |
Human Genome-Wide SAM Activation Library (Three-Plasmid System) | Lenti sgRNA(MS2)_puro,Lenti-dcas9-VP64-Blast,LentiMPH v2 | 23430 Genes,70296 sgRNAs |
4. GeneRulor One-Stop Service Advantages
Choosing GeneRulor means high-quality products and comprehensive support:
4.1 Expert Technical Consultation
Library selection advice
Protocol design guidance
Screening optimization
Rapid technical support
4.2 Complete Reagent Support
Control sgRNAs (non-targeting, essential gene controls)
Cas9-stable cell line construction
Antibiotic and reagent recommendations
4.3 Data Analysis Support
Optional deep data analysis
Results interpretation and support
4.4 Quality Commitment
QC report with every batch
Full NGS validation data disclosed
Free redo if performance does not meet standards
Full technical support
5. Ordering Process
Consultation: Contact our team to find the right library
Order: Specify format, quantity, and timeline
Delivery: 1-3 weeks with full QC report
Support: End-to-end from design to data analysis
6. Off-the-Shelf vs. Custom Libraries
How to Choose?
Choose an Off-the-Shelf Library if you:
Need rapid project launch under tight timelines
Working with standard model organisms (human, mouse)
Screen targets the whole genome or major functional gene sets
Prefer proven, validated libraries to minimize risk
Budget-conscious and prioritizing cost-effectiveness
Choose a Custom Library if you:
Studying non-model or special species
Need a library targeting a specific gene set or mutation sites
Integrating multiple CRISPR modalities
Have special sgRNA or vector system requirements
Our team can help you choose the best approach. In many cases, an off-the-shelf library combined with a few custom sgRNAs offers both speed and flexibility.
7. Why Choose GeneRulor Off-the-Shelf Libraries?
7.1 Reliable Quality
Rigorous NGS and functional validation
Multi-batch consistency testing
Detailed QC report
7.2 Fast Delivery
1-3 weeks, rush delivery in 1 week
75% less wait vs. custom libraries
7.3 High Value
Scale production lowers costs
No custom design fee
30-50% lower total cost
7.4 Comprehensive Service
Postdoctoral team consultation
Complete experimental protocol support
Data analysis service
7.5 Proven Track Record
Served hundreds of research projects
50+ high-impact publications supported
Extensive experience
Partner with us to turn your ideas into high-quality research — from top publications to clinical translation.
References
[1] Doench, J. G., et al. (2016). Optimized sgRNA design to maximize activity and minimize off-target effects of CRISPR-Cas9. Nature Biotechnology, 34(2), 184-191.
[2] Sanson, K. R., et al. (2018). Optimized libraries for CRISPR-Cas9 genetic screens with multiple modalities. Nature Communications, 9(1), 5416.
[3] Wang, T., et al. (2014). Genetic screens in human cells using the CRISPR-Cas9 system. Science, 343(6166), 80-84.
[4] Shalem, O., et al. (2014). Genome-scale CRISPR-Cas9 knockout screening in human cells. Science, 343(6166), 84-87.