Stanley Ross, who took Boone Pultz's U.S. Boxing Association cruiserweight title when he won a 12-round split decision over Pultz Dec. 7 at the D.C. Convention Center, tested positive for marijuana in a urine sample taken the night of the fight, Cora Wilds, head of the D.C. Boxing Commission, confirmed yesterday.

Ross, 28, denied having used the substance anytime during his six-week training period leading up to the title fight. "Did you see the tape of the fight?" an outraged Ross said yesterday from Miami. "Did it look like I had smoked marijuana?"

Ross, a native of Philadelphia, has two avenues of recourse. He can appeal the test results or he can accept them. According to his manager, Ed Gersh, Ross will contest the findings if an independent urinalysis taken yesterday in Miami proves negative. Ross said he will be told the results of those tests today at noon.

If Ross appeals the decision, the second of two urine samples taken the night of the fight will be tested. If the second test is positive, USBA president Bob Lee said he will recommend to the executive board that the title be returned to Pultz, who lives in Washington, D.C. If it is not returned to Pultz, Lee said, it will be declared open.