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Table 1 Clinical and biological parameters of the patient during and after puberty

From: Idiopathic central precocious puberty in a Klinefelter patient: highlights on gonadotropin levels and pathophysiology

Age 8 years 9.5 years 9 years,
10 months
10 years,
4 months
11.5 years 20 years
LH (UI/l) 3.5 0.2 0.2 0.2 0.3 26
FSH (UI/l) 7.7 0.4 0.4 0.4 0.5 39.6
Testosterone (ng/ml) 4.35 0.3 0.2 0.2 0.3 1.16
Testicular diameter (mm) 35 × 25 35 × 20 35 × 20 35 × 20 35 × 20 25 × 12
Tanner staging P2G3 P2G3 P2G3 P2G3 P3G3 P3G2
Bone age 9 years, 11 months   11 years, 6 months 11 years, 6 months 12 years, 3 months  
  1. LH: luteinizing hormone; FSH: follicle stimulating hormone; UI: International units
  2. Period of Triptoreline treatment. Reference values: FSH: 1.1–9.9 UI/l, LH: 0.9–6.6 UI/l