Had my GH tested and very confused

[Tatyana]

I had it measured in the morning after fasting. Don't know if that changes things.

Yes it does.

That is why you are asked to fast for certain tests.

Your GH levels would be low in the morning. To see how much GH you actually are releasing, you would probably have to be bled when you are sleeping or after training.

Your hormones are not at the same levels consistently throughout the day, and that is not just GH.


There are clinical symptoms for GH deficiency, which I am sure would have been fairly obvious to you if you had them.



http://ieeexplore.ieee.org/Xplore/login.jsp?url=/iel2/989/7620/00316005.pdf?temp=x


Construction of time-specified reference limits for growth hormonesecretion in prepuberal children


Hermida, R.C.; Garcia, L.; Fernandez, J.R.; Ayala, D.E.
Computer-Based Medical Systems, 1994., Proceedings 1994 IEEE Seventh Symposium on

Volume , Issue , 10-12 Jun 1994 Page(s):164 - 169
Digital Object Identifier 10.1109/CBMS.1994.316005

Summary:The ideal reference interval for a variable of clinical interest would be specific for all deterministic factors affecting that variable, including the time of sampling in relation to biologic rhythms. In particular, growth hormone is characterized in children by circadian and ultradian variability, with high peaks of secretion occurring mainly during sleep.

This pattern of growth hormone secretion can be modelled by multiple linear least-squares analysis, allowing the concomitant fit of several significant harmonics. With the aim to investigate rhythmic changes in growth hormone secretion and to derive tolerance limits for its circadian variability, while also studying possible differences in rhythmic characteristics between children with short versus standard stature, the authors analyzed data sampled around the clock in groups of prepuberal children differentiated according to stature. Original data were used to compute time-specified tolerance limits for the circadian variability of growth hormone. The method, derived on the basis of bootstrap techniques, does not need to assume normality or symmetry in the data and, therefore, it is highly appropriate to describe the circadian pattern of growth hormone secretion. These tolerance intervals, computed from hybrid time series, may take into account both inter- and intra-individual variability. The provision of such tolerance limits introduces time-specification and time-structure evaluation into prevention, diagnosis and treatment of growth disorders