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  • If you are sending samples from outside of the United States, please add a proforma invoice with a value of $0.00. This is very important to avoid additional taxes and fees. Please read our international shipping instructions carefully.
  • We’re implementing significant upgrades to our testing methodologies within the next 6 months, enhancing the accuracy and diagnostic value of our results. While these improvements will result in a price increase, they reflect our commitment to delivering the highest quality service.
  • The cystinuria (nitroprusside) assay is being replaced by a quantitative assay based on creatinines and will include cystine, ornithine, lysine and arginine at a cost of $183 as of December 1, 2025.
The lab will be closed from December 22, 2025 - January 4, 2026 to give our staff a much needed rest!

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PennGen Laboratories | 3900 Delancey Street, Philadelphia PA 19104 | PennGen@vet.upenn.edu | (215) 573-7545