About Gen-Shi Laboratories
Japanese-inspired lab known for their quality injectables and orals.
gen-shi was huge back in 2010-2015, one of the most popular ugls around. sadly quality went downhill around 2016-2017 and they lost a lot of trust. the brand supposedly changed hands since then. i'd approach with caution if considering them now
gen-shi test e was great for my first cycle. zero pip, the oil is super thin and smooth. started noticing solid gains around week 6 and by week 12 i'd put on about 16lbs of mostly lean mass. really liked this lab
their test cyp and test prop both worked well for strength and recovery. however, their arimidex was completely bunk which caused me e2 issues mid cycle. had to scramble to find legit ai from another source. can't trust a lab where some products work and others don't
Gen-shi used to be my go-to lab. their oils had no pip at all and everything was consistently dosed. haven't used them in a few years since they had production issues but back in the day they were excellent
Currently running gen-shi tren ace and mast prop. both are hitting as expected, tren sides are present (night sweats, slight insomnia) which tells me it's legit. the mast has me looking dry and vascular. pleasantly surprised given the mixed reviews i've seen
Frequently Asked Questions
Is Gen-Shi Laboratories legit?
Gen-Shi Laboratories has 5 reviews on Steroid Radar from real users. 60% of reviewers say they would recommend it. The overall score is 3.4 out of 5, weighted for review freshness and filtered for coordinated voting.
What do reviewers say about Gen-Shi Laboratories?
Reviewers rate Gen-Shi Laboratories on four dimensions: product quality (3.4/5), customer service (3.2/5), delivery speed (3.4/5), pricing (3.6/5). Individual reviews break down specific orders, products, and experiences — browse them below to see detail.
Where is Gen-Shi Laboratories based?
Gen-Shi Laboratories operates in the United States. Regional focus affects shipping times, payment methods, and legal compliance — confirm the latest details directly with the source before ordering.
How is Gen-Shi Laboratories's rating calculated?
The rating is a weighted average of star sub-scores (70%) and recommend rate (30%), with a Bayesian prior to stabilize new sources, a 6-month freshness window, and a brigade filter that excludes reviews with coordinated downvote patterns. Full methodology is published on the How We Rank page.
Rating details explained on the methodology page.
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