▁reaction ▁using ▁special ▁prim ers ▁and ▁conditions ▁can ▁be ▁used ▁to ▁directly ▁detect ▁the ▁gl u 4 8 7 ly s ▁A LD H 2 ▁gen es . ▁ ▁For ▁other ▁causes ▁of ▁ac etal de hy de - indu ced ▁alco hol ▁sens it iv ities , ▁the ▁eth an ol ▁patch ▁test ▁will ▁need ▁to ▁be ▁tested ▁for ▁ver ification ▁of ▁its ▁ac etal de hy de ▁basis ▁and ▁appropriate ▁polym er ase ▁chain ▁re actions ▁will ▁like wise ▁be ▁needed ▁to ▁ ▁verify ▁a ▁gen etic ▁basis ▁for ▁sympt oms . ▁ ▁Di agn osis ▁of ▁alco hol ▁sens itivity ▁due ▁to ▁all erg ic ▁react ivity ▁to ▁the ▁all erg ens ▁in ▁alco hol ic ▁be ver ages ▁can ▁be ▁confirmed ▁by ▁standard ▁skin ▁pr ick ▁tests , ▁skin ▁patch ▁tests , ▁blood ▁tests , ▁challenge ▁tests , ▁and ▁challenge / el im ination ▁tests ▁as ▁conducted ▁for ▁determ ining ▁the ▁aller gen ▁causing ▁other ▁classical ▁all erg ic ▁re actions ▁( see ▁aller gy ▁and ▁Sk in ▁aller gy ▁tests .) ▁ ▁Tre at ment ▁ ▁A void ance ▁of ▁eth an ol ▁is ▁the ▁saf est , ▁sur est , ▁and ▁che apest ▁treatment . ▁ ▁Indeed , ▁surve ys ▁find ▁a ▁positive ▁correlation ▁between ▁high ▁inc id ences ▁of ▁gl u 4 8 7 ly s ▁A LD H 2 ▁alle le - related ▁alco hol - indu ced ▁resp ir atory ▁re actions ▁as ▁well ▁as ▁other ▁causes ▁of ▁these ▁re actions ▁and ▁low ▁levels