Testing HGH Levels in Blood

I've been taking 3IU for around three months now, along with a TRT dose of 150mg. I've got my initial IGF and Z-score results, so it's time for me to get tested and see how I'm doing. I have a couple of questions. I take 3IU every night before sleep, and I typically get my blood drawn first thing in the morning. Is there a specific time I should aim for when testing IGF levels? I'm also currently tapering off Nolvadex, which should be wrapped up by the end of next week. I did have a minor flare during my last cycle. I've heard that Nolvadex can reduce IGF levels, so how long should I wait after finishing it before I get a reliable reading? Is there anything else I should consider testing alongside IGF and Z-score for HGH? I realize I need to monitor my fasting glucose, and my blood work will also cover lipids, CBC, thyroid, and testosterone/E2 levels. Just checking if there's anything additional I should include. Thanks for any advice!