Serum XXXX levels in healthy adolescents: Effects of gender and growth.

@entity1 @entity1243
OBJECTIVES: The purposes of this paper were to evaluate the serum @entity1243 levels in healthy adolescents and to establish standard age variation curves. METHODS: Nine hundred six (414 @entity1 and 492 @entity1 ) healthy adolescents were investigated. The maximum increment age in height (MIA) was identified in 124 @entity1 and 130 @entity1 . The menarcheal age (MA) was obtained for 130 @entity1 . Fasting @entity1243 levels were measured by enzyme immunoassay. The MIA was calculated by proportional allotment of yearly height increments. RESULTS: Serum @entity1243 levels did not change in @entity1 and @entity1 from the ages of 9 to 11. They decreased after the age of 11 in @entity1 , while they increased in @entity1 . Stepwise multiple regression analysis revealed that serum @entity1243 levels were closely related to pubertal stage. The levels decreased remarkably after MIA in @entity1 and increased remarkably after MA in @entity1 . We drew standard age variation curves of serum @entity1243 levels by calculating the 25th, 50th and 75th percentiles for each age in both @entity1 and @entity1 . The percentile curves for @entity1 were divided into pre-MIA and post-MIA curves. Those for @entity1 were divided into pre-MA and post-MA curves. CONCLUSION: We have devised a potentially useful method for evaluating serum @entity1243 levels in adolescents considering the effects of gender and growth.
