GHRP-6
Growth Hormone Releasing Peptide-6, Growth hormone-releasing hexapeptide, His-D-Trp-Ala-Trp-D-Phe-Lys-NH2
Plasma growth hormone response to growth hormone-releasing hexapeptide (GH-RP-6) in children with short stature.
Pombo. M M; Barreiro. J J; Peñalva. A A; Mallo. F F; Casanueva. F F FF; Dieguez. C C
Key Findings
- Children with confirmed GH deficiency showed a weaker GH response to GHRP‑6 than normal kids.
- Growth‑retarded children with normal GH secretion responded similarly to healthy controls.
- There was a lot of overlap in individual responses, making the test unreliable for diagnosis.
Practical Outcomes
- For biohackers or adult self‑experimenters, this study offers no actionable insight. GHRP‑6 does not appear useful for diagnosing or treating growth issues in this context, and it doesn’t suggest any new dosing or protocol changes for longevity or performance goals.
Summary
A study gave a single IV dose of the peptide GHRP‑6 to children with short stature to see if it could help diagnose growth hormone deficiency. The test didn’t reliably separate kids with true deficiency from those who just grew slowly, so it isn’t useful as a diagnostic tool.
Abstract
Eighteen children with short stature were evaluated for growth hormone (GH) reserve after pharmacological tests and a single iv injection of GH-RP-6. These children were divided into two groups: 10 were diagnosed as having idiopathic GH deficiency by classical stimulation tests (group A) and the remaining 8 (group B) were considered growth-retarded children with normal GH secretion, following conventional stimulation, but reduced endogenous GH secretion. The results were compared with a group of 12 normal children. As a group, patients in group A showed a lower GH response to GH-RP-6, while patients in group B had a similar response as normal controls. However, on an individual basis, a considerable degree of overlapping in responses among the three groups was evident. These data indicate that, on an individual basis, GH-RP-6 testing is not of diagnostic value in children suspected of having idiopathic GH deficiency.
Study Information
pubmed
1995
1995-08-01T00:00:00.000Z
10.1111/j.1651-2227.1995.tb13790.x
18
23