A FLASH of
Possibilities.

"I recently had the pleasure of using GenScript's Gene Synthesis service. I was impressed by their Fair, Transparent Pricing and Exceptional Customer Service, which included prompt and clear communication. They delivered my genes on schedule, earning my trust and recommendation for anyone in need of Reliable gene synthesis services."

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Matt Wang

Trait Biosciences

"GenScript's services, including Gene Synthesis, Peptide Synthesis, and Antibody Production, have proven invaluable to my research. Their services are always of the Highest Quality with Reliable turnaround times. "

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Venkata Vamsee Mallajosyula

Stanford University

"GenScript simplified my Gene Synthesis order, quickly designing and creating exactly what I needed, even correcting my submission errors. Fast and reliable service! Expert staff!"

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Maranda McDonald

John Hopkins University

"GenScript has been my go-to for DNA Cloning, Mutagenesis, and Gene Synthesis services. Consistently over the past several years, with hundreds constructs ordered, I have received excellent customer service, pricing, and speedy delivery without any letdowns."

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Christopher Lennon

Murray State University

"Thanks to GenScript, I was able to generate a CAR-T cell product with high transduction efficiency and efficacy. I'm glad to have GenScript's help with gene synthesis and plasmid preparation in my workflow, and I plan to keep using their services for my future projects, even after my PhD. They are extremely communicative and thorough at every stage of my project without even having to ask, and their transparency and pleasantness is why I continue to come back to GenScript"

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Samantha Chin

Graduate Student, The George Washington University

"From 2009, till today I was with GenScript. I never face any challenge. very easy and commendably service I received from here. so many time I have worked with difficult to expressed gene. Thanks to GenScript for each and every solution. I am happy to work with you for many more years. "

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Parvinder Kaur

Senior Manager, Meril Medical Innovation

FLASH Gene — FAQ

• Do you offer more than 3 kb gene synthesis service?

  Yes! GenScript's Premium Gene service provides highly customizable options for complex genes, including GC-rich regions, up to 200 kb. Get an instant quote GenSmart™ 2.0 Online Ordering system or consult our 24/7 experts for tailored solutions.

• What is the difference between FLASH Gene and GenScript's Premium Gene?

  FLASH Gene offers ultra-fast 4-day delivery with flat-rate pricing. Premium Gene supports more complex and longer sequences. See below for detailed breakdown.

  Feature	FLASH Gene	Premium Gene for your advanced needs
  Turnaround Time	4 business days	5–9+ business days
  Sequence Length	Up to 3000 bp	Up to 200k bp
  Vectors	150+ FLASH Gene Vectors or Onboard your own	200+ Vectors or onboard your own
  Pricing	Flat-rate pricing starting at $89/construct (includes cloning, plasmid prep)	Starting at $0.15/bp
  Sequence Complexity	Covers most of your needs	Supports > 3 kb and your advanced needs

• How is GenScript's FLASH Gene so fast and different from competitors?

  FLASH Gene redefines the future of gene synthesis, offering the fastest turnaround time and a unique flat-rate pricing model. Powered by the GenGenius™ automation platform, FLASH Gene is shipped in just 4 business days without compromising quality.

• Does FLASH Gene's turnaround time include shipping?

  The turnaround time indicates production time only. FLASH Genes are shipped overnight or via express shipping from local production facilities.

• What is FLASH Gene's Flat Rate Pricing model? What does it include?

  Our flat rate pricing makes budgeting easy and ensures cost-effective DNA synthesis. This model covers DNA synthesis, cloning, and default 4ug plasmid preparation — all for a fixed price starting at just $89 per construct. No surprises, just clear and predictable costs.

• What if my sequence doesn’t qualify for FLASH Gene?

  Our GenSmart™ 2.0 platform automatically checks sequence eligibility. If your sequence doesn’t qualify, we offer Premium Gene for more advanced synthesis needs. You can also use our free codon optimization tool to improve your sequence and increase the chance of qualifying for FLASH Gene.

• How does GenSmart™ Codon Optimization help with FLASH Gene qualification?

  Our industry-leading, free codon optimization tool adjusts your sequence using host-preferred codons to improve expression and increase eligibility for FLASH Gene. Try GenScript’s free GenSmart™ Codon Optimization Tool here.

• What are the specifications if I need more than 3 kb gene synthesis?

  Sequence Input	Length: Up to 200,000 bp Format: Nucleotide or Amino acid sequences
  Cloning Options	Vectors: Choose from GenScript Clone Vectors, Expression Vectors, or your Vectors Cloning Methods: Choose from restriction cloning, or seamless cloning
  Plasmid DNA Options (From 2 Business Days)	Quantity: Choose from 10µg to 2g Supercoil: Choose from predominantly supercoil, ≥ 80% supercoil, or ≥ 90% supercoil Endotoxin Level: Choose from ≤ 0.1 EU/µg, ≤ 0.01 EU/µg, ≤ 0.005 EU/µg, or not guarantee Poly A guarantee add-on service AAV ITR guarantee add-on service Optional quality control tests and production processes
  Turnaround Time Options	From 72 hours The Fastest Rocket From 5 Business Days Most Popular Premium From 9 Business Days Best Value Basic

  Length Range (bp)	Turnaround Time (Business Days)
  	Rocket Gene Synthesis	Premium Gene Synthesis	Basic Gene Synthesis
  <1,500	3+	5+	9+
  1,500-3,000	5+	8+	10+
  3,000-5,000	7+	10+	14+
  5,000-8,000	Request a quote	15+	19+
  8,000-15,000	N/A	20+	N/A
  15,000-20,000	N/A	Request a quote	N/A
  >20,000	N/A	Request a quote	N/A

• What happens if I need more than the default 4 µg plasmid prep?

  If additional plasmid prep is required, the turnaround time will increase based on the selected prep tier, starting at +2 business days. For details, visit our Plasmid DNA Preparation Service.

• What are the default and available plasmid quality control options?

  The standard quality control for FLASH Gene includes Sanger or NGS sequencing. Additional quality controls can be bundled with plasmid DNA preparation.

• Why is vector onboarding necessary, and can I onboard my own vector?

  Vector onboarding ensures the fastest turnaround with ready-to-clone vectors. Even if your vector is already with us, it needs to be archived again for the quickest turnaround.

  If you choose to onboard your own vector, please note that it will add 5 business days to the turnaround time. To speed up your project, we also offer over 150 FLASH Gene vectors for you to select from.

• What is GenSmart™ 2.0 Online Ordering System? What are the advantages?

  GenSmart™ 2.0 Tutorial Video

  

  GenSmart™ 2.0 helps design, optimize, and quote your genes instantly, with built-in tools like free codon optimization.

  • Assess your genes & vectors to confirm their eligibility for FLASH Gene.
  • Optimize your sequence with the best-in-class codon optimization algorithm.
  • Choose from our FLASH Gene Vectors or onboard your own vectors.

  Order Now Quote/Order