Ever since he was a toddler, Jase has always been on the smaller side. As he grew, he seemed to have found his growth curve for height in the mid to upper twenties on the standard growth percentile scale. And then about three years ago, his growth slowed down. And now at age 13, he is only in the fourth percentile for both weight and height.
To understand growth percentiles, think of it this way. If 100 thirteen-year-old boys stood in a room. 96 of them would be taller than Jase. In other words, he is short. In fact, his 10-year-old sister is almost as tall as he is. (And yes, I know girls often grow faster at a younger age.)
Now there is a chance that Jase is just a late bloomer and one summer (or fall) he is going to grow several inches and catch up with the other boys. But since he has dropped so low in the height percentages and has not been growing the standard two inches that doctors expect kids to grow every year, Jase’s doctor suggested we get him checked out to ensure nothing else was wrong.
So, we made an appointment with a pediatric endocrinologist. Our doctor was awesome, explaining that he could be a late bloomer and how many kids have a slowdown of growth before they take off. Both my husband and I had a few “late bloomer” traits from our own childhoods. But there were other areas to explore just to rule out any other problems. They would do a blood test to check the function of his thyroid, check hormone levels and to check for celiac disease. They also ordered a bone age test to evaluate how fast or slow his bones were maturing.
Jase was more worried about the blood draw than the bone test which is just an x-ray of his left hand and wrist. Jase had never had blood drawn or an x-ray before this. He did excellent with both tests. He didn’t seem worried about the result. Actually, he seemed happy that the doctor had noticed a little fuzz growing on his upper lip. (Looks like shaving will soon be in his future.)
A day later, we got the results from the bone age test. It showed his bones were measuring at 12 years six months, which is a standard deviation from his actual age of 13 years 1 month at the time of the test. Based on his test, his projected height will be 5 feet 8 inches. Of course, that is only a prediction and not a guarantee.
The blood test showed his thyroid was working just fine, and his level of growth hormone level was normal. Besides being a little low on vitamin D, everything checked out normal. Guess this leaves him being a late-bloomer!