Nandrolone is known to skew up the simple testosterone bloodwork test (if the method to measure the hormone is CMIA for example), ie nandrolone will show up as testosterone just like in the case you described. However, some laboratories use the more expensive LC-MS/MS method that is not affected by nandrolone. I'm willing to bet that the bloodwork was not done using the LC-MS method. It is well known that nandrolone can show up as testosterone in bloodwork. Another common example is trenbolone showing up as estradiol.labmax is qualitative testing which is meaningless when it comes to hormones because it doesn't tell you how accurately it is dosed. for all you know it could be half the potency but still 100% pure.
couple weeks ago there was some guy in here posting bloods while being on 75mg test per week and 100mg deca. his test was at like 1200ng/dl and he is definitely not pulling that from 75mg of test per week i don't care what you say. nobody pulls a 1200 from 75mg.. that would mean the guy only needs 40mg of test per week for actual legit TRT. it seems to me that the 100mg of deca he thought he was injecting is actually 100mg test because pulling a 1200 from only 75mg is unheard of, pulling 1200 from 175mg is way more realistic. it would indicate a great responder, but still realistic. you see where i'm going with this?