0000950134-98-003341 PRE 14A 1 19980528 19980417 NASD QUEST MEDICAL INC 0000351721 3841 751646002 TX 1231 PRE 14A 34 000-10521 98596405 ONE ALLENTOWN PARKWAY ALLEN TX 75002 9723909800 ONE ALLENTOWN PARKWAY ALLEN TX 75002 PRE 14A 1 000095013498003341-001-seq1-pre-14a.txt PRELIMINARY PROXY STATEMENT