o-, m-, p-Xylene (as Methylhippuric Acid), Occupational Exposure, Urine

CPT: 82570; 83921
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Test Details


  • Xylene


Evaluate exposure to o-, m-, p-xylene


Gas chromatography/flame ionization detection (GC/FID); spectrophotometry (SPEC)

Specimen Requirements


Urine (random)


10 mL

Minimum Volume

2 mL


Plastic urine container without preservative


Urine container should be filled to prevent loss of volatile compound into headspace.

Storage Instructions

Refrigerate; specimen may also be frozen.

Causes for Rejection

Urine from preservative tube


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
791128 o,m,p Xylene as Methylhippuric 809530 Creatinine mg/dl 2161-8
791128 o,m,p Xylene as Methylhippuric 808926 Methylhippuric Acid g/l 21387-6
791128 o,m,p Xylene as Methylhippuric 808927 Methylhippuric Acid g/g creat 13774-5

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