The diagnosis of GH deficiency in adult β-thalassemic patients: are two different stimulation tests necessary to improve specificity?
Authors' conclusion
The marked variability in GHD diagnoses among adult patients with βTM highlights the need for multiple diagnostic tests to improve accuracy and avoid unnecessary interventions. Our findings highlight the importance of reassessing GH secretory reserves with multiple tests at multiple time points, supporting a cautious approach to hormone replacement therapy, suggesting to start it only when clearly indicated.
Study context
- Population
- Adults with β-thalassemia major (βTM)
- Participants
- 80 vs 91
- Comparison
- Repeat GHRH plus arginine test after two years; glucagon stimulation test vs GHRH plus arginine test
- First studyn = 80
- Second studyn = 91
- Outcome
- GHD diagnosis confirmed on retesting
Methodological detailstwo experimental studies, follow-up retesting, two stimulation tests compared
- Two experimental studies
- Follow-up retesting
- Two stimulation tests compared
Performance
As reported in the abstract
First study: normal GH secretion at first test confirmed at retest
57 of 67
First study: initial growth hormone deficiency (GHD) confirmed at second test
3 of 13
Second study: initial severe GHD confirmed by glucagon stimulation test
6 of 18
Original publication
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