The steroids trenbolone acetate (TbA) and melengestrol acetate (MGA) are licensed as growth promoters for farm animals in several meat-exporting countries. Although many studies have explored their safety for both animals and consumers, little is known about their fate after excretion by the animal. Our study aimed to determine the residues and degradation of trenbolone and MGA in solid dung, liquid manure, and soil. In animal experiments lasting 8 weeks, cattle were treated with TbA and MGA. Solid dung and, in case of trenbolone, liquid manure were collected and spread on maize fields after and months of storage, respectively. Determination of the hormone residues in all samples included extraction, clean-up (solid-phase extraction), separation of metabolites and interfering substances by HPLC (RP-18), and quantification by sensitive enzyme immunoassay. Procedures were validated by mass spectrometry (MS) methods. During storage of liquid manure the level of trenbolone decreased from 1,700 to 1,100 pg/g (17alpha-isomer), corresponding to a half-life of 267 days. Before storage, the concentrations in the dung hill ranged from 5 to 75 ng/g TbOH and from to 8 ng/g MGA. After storage, levels up to 10 ng/g trenbolone, and 6 ng/g MGA were detected. In the soil samples trenbolone was traceable up to 8 weeks after fertilization, and MGA was detected even until the end of the cultivation period. The results show that these substances should be investigated further concerning their potential endocrine-disrupting activity in agricultural ecosystems.
Orders are shipped next day after payment is received. Delivery time depends on the final destination. Most of the orders are delivered within 5 days to whole Europe and 10 days to United States.
Orders are fully track-able.
Discreet shipping. We respect your privacy. We never use company name or " steroid " word on the packaging. Orders are discreetly and safely wrapped.
99% delivery success rate to Europe and USA, including Norway. " But what will happen if my order is seized by customs? " Nothing. We simply send your order for free again.
Who are you and why should I trust you?
Our team is made up of matured people who love bodybuilding, cycling, crossfit, fighting sports and actually any sport available. We have been using steroids for nearly 20 years so we have a lot to say and share!
We have been in " steroid business " for very long time and we believe that returning customer is the biggest win we can achieve. If you still don't trust us, feel free to make a test order - our delivery price is set low so everyone can place a small trial order and check our service, products.
We also use legitimate review system directly on the website. is also a verified pharmacy on the biggest underground steroid portal: eroids where you can find many real reviews from real reviewers.