The Hawaii football team has learned the healing process does not have a set schedule.

More than a week ago, receiver Billy Ray Stutzmann and linebacker George Daily-Lyles were diagnosed with concussion-like symptoms. On Monday, both passed the ImPACT test, which, according to the exam’s website, "measures multiple aspects of cognitive functioning."

But while Stutzmann has been practicing on a limited-contact basis since Monday, Daily-Lyles has been held out of all football-related drills.

"It’s really frustrating, especially to come back and want to play, but it’s another thing keeping you out," Daily-Lyles said.

UH coach Norm Chow said he will not activate a player who has suffered a head injury until full medical clearance has been granted.

"There is a certain concussion protocol," Chow said. "We’re not going to risk anybody’s health."

Stutzmann, who suffered his injury when he fell during a drill last week, said he had mild symptoms. He said he is not certain that he actually suffered a concussion.

Stutzmann said he aced the ImPACT test, and then responded well in non-contact football drills. As a precaution, he has been fitted with an orange jersey, a color designation for players who are not allowed to be tackled during drills. Stutzmann is expected to start in Saturday’s road game against Colorado State.

It will be decided today if Daily-Lyles will be added to the travel roster.

"It’s a day-to-day process," Daily-Lyles said. "You can talk to the doctor today and it’s good. You can talk to the doctor tomorrow and it’s ‘you still have to do this.’ It’s all in the doctor’s discretion."

On the first day of training camp, each player takes the computer-based ImPACT test. The results are recorded. After a player suffers concussion-like symptoms, he takes the test again. The scores are compared to determine if there is cognitive loss.

"I blew that test out of the water," Daily-Lyles said. "I passed with flying colors. I did better (on that test) than I did on the first test."

Daily-Lyles said he is eager awaiting full clearance.

"It’s all precautionary, and I do appreciate that," Daily-Lyles said. "I do want to walk, talk and write when I get older. I appreciate the doctors and what they’re doing for me. But there’s a big part of me that wants to get back onto the field and play. I look forward to them giving me the green light."

Chow, meanwhile, endorses the caution light. Chow recalled a recent magazine article detailing the memory problems former quarterback Jim McMahon is experiencing as a result of a football career peppered with concussions. Chow was the offensive coordinator and McMahon was the starting quarterback at Brigham Young.

"I was in tears reading the article about Jim McMahon," Chow said. "It was sad. It wasn’t just Jim. It was three other (former) pros. One lady said ‘in our golden years we were supposed to be enjoying life. Instead, I go to the rest home every day to see my husband.’ I don’t want that to happen to my players."