Hey guys thank you so much for the very concise responses. To address the question, I had the first two tests done in the morning, and I didn't eat after a nights sleep. The one that said 9.9nmol/L was actually done at 5pm, because this is where the symptoms would hit me the hardest, I figured it should be severely low. So far I have made big attempts to change my lifestyle. I totally quit all drugs, I cut down drinking to one day a week and trying to maintain it to 2-4 gin tonics max. I am trying my hardest to not relapse smoking and setting a sleep schedule. Also I took up power lifting and paleo diet. Of course I'm not at a point yet where I'm being 100% faithful to my regime, I'm taking it one step at a time.
I am 80% sure I have sleep apnea to some extent. I am a lifelong mouth breather, and am waiting till I can afford the expensive surgery to open up my nasal airways or something. I honestly can't even get it checked as that alone costs over 400 dollars, too much for a uni kid. I will try to find an endo tho, all my advice is from my GP, and he only addressed my concerns as he used TRT himself, but he's no expert.
So what kind of tests would I need to do to differentiate a problem between the hypothalamus or pituitary gland? And how does a restart work exactly, is there anything I will take or is it possible for that to occur naturally? Also since my SHBG is low, would that mean the free test I have is more 'bioavailable' or should my numbers be higher?
Thank you so much!
Congratulations on the lifestyle changes, those are the first serious steps towards fixing this situation. Smoking, sleep apnea, drugs, lack of sleep, etc all can lead to decreased test levels. Fixing them is the first critical step in this process. Don't be complacent with the progress you've made, rather keep motivating yourself to do better.
Testosterone operates on a diurnal rhythm meaning sleep is necessary to the production of test and your serum test levels are highest upon waking. Glucose and insulin release can also lower natural test levels so its best to be fasted for the test. We asked if the tests were done in the am bc the best way to diagnose the problem is seeing what your peak levels are in the morning since they will always drop off the later in the day it is. The tests should be done under the same conditions to be comparable also so if your fittest was rich after getting up and fasted, the rest of your tests should be as well unless explicitly told otherwise by the doctor which means he's testing for something specific. Sleep apnea is a serious condition and can significantly affect testosterone production. It may not completely solve the problem of low t but there is not doubt its negatively impacting you if you do have it. You should definitely have a sleep study performed and get tested for sleep apnea. Make sure the doctor is aware of this as well bc there's a member on here who went on TRT when his levels weren't low and only had sleep apnea. Now he is having problems regaining natty test production when he never needed TRT to begin with.
An Endo is yiur best bet. If you have insurance through your job or school or parents USE IT. Don't try and solve this on your own bc there are any number of possibilities and pathways to check and an experienced eye is needed to assess the results of each test.
I don't have much time right now but can come back later tonight or tomorrow to help answer your questions. In the meantime in an give you a brief overview and answer to your questions and somekne else may care to elaborate and you can get starting points for what to research yourself.
Primary hypogonadism means your brain is producing the signal necessary but the testes are not functioning and no matter how much signal they get, they will never produce enough test. This is not treatable and requires testosterone replacement therapy (TRT). You would be in some semblance "castrated" since no the testes are responsible for production. Secondary hypogonadism means the testes are functioning fine but the brain isn't sending the right amount of signal (LH and FSH) so the testes aren't producing enough bc of lack of signal. Possible causes of primary are Klinefelter syndrome, turners syndrome, mumps can cause it, and more. Causes of secondary are Kallmann syndrome, hypopituitarism, hyperprolactinemia, androgen insensitivity syndrome, and more.
Your doctor specified secondary because you do have a usable LH and FSH level but they're obviously either low enough that its not sufficient to support as much test production as needed or you've somehow become desensitized and developed a resistance to the signals. Regardless, your total levels are low.
One quick way to test if its in the pituitary or hypothalamus is with Lh and FSH. You are making some of each naturally so the pituitary isn't the sole cause probably. Another test usually performed is the GnRH test. GnRH is secreted by the hypothalamus and the pituitary picks up on this signal and uses it to produce LH and FSH which then go to the testes. If your GnRH is low, it indicates a hypothalamus issue and if its in range it indicates possible pituitary issue. Thyroid can also affect this but your numbers look fine so thyroid issue is not likely. Hyperprolactinemia is unlikely bc your PRL levels are in range.
A restart basically uses Human Chorionic Gonadotropin (HCG) to mimick LH signal in the testes and tells them "to perform" and make testosterone. Human Chorionic Gonadotropin (HCG) is like a fake LH signal and since its not Lh and the testes pick up on this, the pituitary is bypassed and therefor suppressed. But natural production starts if the testes function fine. An Aromatase inhibitor (AI) is also added during this time bc of increased aromatase activity. After a length of time usually a few weeks of this treatment, you'd move into SERM phase. SERM's will work through a negative feedback loop to produce endogenous test once the Human Chorionic Gonadotropin (HCG) stops. Human Chorionic Gonadotropin (HCG) is suppressive so its used in the beginning to sort of get the ball rolling. SERM's are not suppressive and pick up where Human Chorionic Gonadotropin (HCG) left off. Clomid, Nolva, raloxifene are all examples of SERM's. during this time, it also wouldn't hurt to add any precursors to test production or anything you may be deficient in such as DAA, vitamins B, D and E, increase saturated fat intake slightly, zinc, magnesium, etc. after cessation of SERM treatment, your monitor blood work for the next few months to see if natural production is restarted and if so, is it being sustained.
SHBG is a hormone that takes free testoserone and binds to it rendering it inactive. Lower SHBG are preferred since it leaves more bioavailability T but with your low levels one would typically expect to see higher free test (you're low in free test) but your low total T could be affecting that.
Hope that helps and like I said, maybe others can chime in and I'll check back later in this thread. I included at the bottom of the post a diagnostic evaluation of hypogonadism which can help familiarize you to the processes involved. My suggestion to you is to start reading and educate yourself. An educated patient has a much higher chance of recovery than solely relying on the doctor. You know things about your body that he won't which could help diagnose things. Do not be a couch potato in this affair, be proactive and you'll be better of for it. Hope this helps and don't swet things too much until you have more info to work wih
Diagnosis
Because of the well-known diurnal rhythm of serum testosterone, which appears to be lost with age (>60 years), with values 30% or so higher near 8 am versus the later day trough, a testosterone value should be determined first thing in the morning. Normal ranges vary among laboratories. Although the usually quoted range for young men is 300 to 1000 ng/dL, the lower limit reported for the Cleveland Clinic is 220 ng/dL. In general, values below 220 to 250 ng/dL are clearly low in most laboratories; values between 250 and 350 ng/dL should be considered borderline low. Because the acute effect of stressful illness may result in a transient lowering of testosterone levels, a confirmatory early morning specimen should be obtained. Measurement of free testosterone levels or bioavailable testosterone levels, determined adequately in select commercial laboratories, may provide additional information (see later, ***8220;Pathophysiology***8221

. For example, free testosterone levels may be lower than expected from the total testosterone level as a result of aging and higher than expected in insulin-resistant individuals, such as in obesity. In addition, serum follicle-stimulating hormone (FSH), luteinizing hormone (LH), and prolactin levels should be determined to help delineate the cause of the testosterone-deficient state.
If gonadotropin levels are not elevated, despite clearly subnormal testosterone values, anterior pituitary (thyroid-adrenal) function should be determined by measuring free thyroxine and thyroid-stimulating hormone levels, as well as an early morning cortisol level. A magnetic resonance imaging (MRI) scan of the brain and sella should be considered. An exception to this recommendation is the condition of morbid obesity, in which both total and free testosterone levels are typically low and gonadotropin values not elevated. Hyperprolactinemia, even of a small degree, may also warrant ordering MRI, because interference of hypothalamic-pituitary vascular flow by space-occupying, stalk-compressing lesions will lead to disruption of the tonic inhibitory influence of hypothalamic dopamine, and result in modest hyperprolactinemia (usually 20 to 50 ng/mL range).
A semen analysis should be performed when fertility is in question.