Table 2

Mean (CV%) pharmacokinetic parameters after subcutaneous administration of 2.92 mg r-hGH/subject by cool.click™ 2 or needle injection


cool.click™ 2 (test) mean (CV%)
Needle and syringe (reference) mean (CV%)
Ratio (test/ref)
90% CI for ratio
Falls within 80–125% range?
p-value

AUC0-last (hours·ng/mL)
125.1 (30)
119.3 (27)
104.8
98.1, 112.0
Yes

AUC0-inf (hours·ng/mL)
135.5 (27)
131.1 (24)
103.4
97.1, 110.0
Yes

Cmax (ng/mL)
20.0 (43)
18.0 (37)
110.8
103.7, 118.3
Yes

tmax (hours)*
3.0 (2–6)
4.5 (2–6)



0.002
t1/2 (hours)
2.17 (42)
2.26 (37)





CV, coefficient of variation; AUC0-last, area under the serum concentration-time profile from time zero to the last quantifiable concentration; AUC0-inf, area under the serum concentration-time profile from time zero to infinity; Cmax, maximum serum concentration; tmax, time that Cmax occurs; t1/2, elimination half-life. Means are geometric least square means, n = 38

* Median (range)

Brearley et al. BMC Clinical Pharmacology 2007 7:10   doi:10.1186/1472-6904-7-10