
Originally Posted by
kelkel
Hi Getup!
The BW put together at the top of this thread is more comprehensive than what your doc pulled and geared to check the things that can impact a males testosterone levels. Hypothyroid, elevated cortisol or prolactin can all impact testosterone levels. I am glad he pulled an NMR Lipo Profile as it's a great way to know your LDL Particle size which is crucial in cholesterol.
At 27 years old your testosterone should be much higher. For your endo to tell you this is simply wrong in my opinion. Remember, most doc's just don't know hormones as they don't have training in them. The title "Endo" does not mean that they do know them. The reason LH & FSH are important is that they are indicators of pituitary function. This is where testosterone production begins basically. LH and FSH signal your testicals to produce testosterone and sperm, respectively. If these signals are weak you'll have low testosterone. This is why they are important to know.
If they're low then something is impacting them negatively and you then have to find out what. One indicator on your blood work could be TSH. If it's high then it's an indicator (albeit weak) of hypothryoidism which can cause hypogonadism. More thyroid panels should be pulled at this time. Elevated cortisol can suppress T levels as well as elevated prolactin. If prolactin is too high then an MRI should be performed for pituitary adenoma's, but lets not get ahead of ourselves here. Other things can cause low T as well, such as trauma, medications, varicoceles, etc.
So, if your LH is low your T will be low. If your LH comes back high and you have low T then the problem is testicular related and the ultrasound you mentioned should be performed.
What are the levels and ranges for:
TSH
Prolactin
Cortisol
T4 free