The researchers were particularly concerned that only 13% knew a specific danger sign to look for in tests checking that the heart was working properly, the team reported in Archives of Diseases in Childhood.

BBC: Doctors 'miss' underweight children, UCL study suggests

New York City education officials are developing more than a dozen new standardized tests, but in a sign of the times, their main purpose will be to grade teachers, not the students who take them.

FORBES: New York City to Roll Out New Tests to Rate Teachers

In some industries, lengthy Pilot tests are required before an enterprise customer will sign a definitive purchase order.

FORBES: How To Gain The 'Traction' A VC Cannot Ignore

The union says its members refused to sign the contract but there were no requests for drugs tests until last week.

BBC: Teachers strike over random drugs test call

All students must sign up ahead of time and can't switch locations or tests.

WSJ: College Tests Get New ID Standards

However, it is a good sign that the node does not bother him and that he has not been sick and that the tests that were done were all normal.

CNN: Should I worry about my son's swollen lymph node?