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Why Genetic Testing May Guide Your Treatment Choice PlexusDx offers the Precision Peptide Genetic Test, which analyzes key variants in peptide-pathway genes including GLP1R (rs6923761), GIPR (rs1800437), FTO (rs9939609), and MC4R (rs17782313)

But most of these products dont work as their active ingredients never reach the brain due to the blood-brain barrier

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Cheng FW, Ford NA, Taylor MK

This result may not be surprising given that, under wild-type condition, there are probably enough substrates including both C17iso FAs and L-serine or L-alanine in the pool of free FAs and amino acids and it is the enzyme SPT that determines substrate specificity