igf-1 test

I'm using CJC-1295/IPA and not any HGH. My understanding is that GH is released in pulses mostly as I sleep. The HGH converts to IGF 1. So does IGF 1 vary during a 24 hour period? If so, is there any point to testing it? If it changes during the day how can I get a meaningful result?

Will IGF-1 test be different between people come from Africa and Asia after injection?

I dropped blacktops dosage to 5ius 5 days prior to testing. So that means I normally get an IGF score of 82ng per iu of HGH.