The AAN says a combination of tests can be used to help diagnose concussion and predict delayed recovery.

WSJ: Tougher Rules Advised for Athletes After Concussion

Most experts agree a proper combination of tests can supply you a greater understanding of how to motivate employees, fit them in the right jobs, and enhance their performance -- saving potentially millions of dollars in wrong hires and absenteeism.

CNN: Testing times in the search for talent

Dr, Ruth Shaber of Kaiser Permanente is a big fan of using the two tests in combination.

NPR: Detecting High-Risk HPV in Older Women

Regardless of the results of those tests, a new, improved combination will be tested next.

FORBES: Merck, Aventis Team On AIDS Vaccine

Tests are continuing, to identify a combination of wrap and oil that reduces the residue.

BBC: Medical tools

The study tests whether Vytorin, which is a combination of Schering-Plough's (nyse: SGP - news - people ) Zetia and Merck's (nyse: MRK - news - people ) Zocor, prevents heart attacks, strokes and deaths better than Zocor alone.

FORBES: Schering-Plough Backdates Trial

Pfizer is still conducting tests of the drug in breast cancer, colorectal cancer, skin cancer and in lung cancer in combination with Genentech 's Tarceva, according to Ray Kerins, a Pfizer spokesman.

FORBES: Magazine Article

Pfizer is still conducting tests of the drug in breast cancer, colorectal cancer, skin cancer and in lung cancer in combination with Genentech 's (nyse: DNA - news - people ) Tarceva, according to Ray Kerins, a Pfizer spokesman.

FORBES: Pfizer Stops Developing Coley Cancer Drug