Ammonia gas measurement

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ammonia

Avatar m tn The authors consulted from a male patient (subject) of PATM and conducted an interview, skin gas measurement, measurement of volatile chemical substances from worn underwear, and microorganism examination in the nasal cavity. As a result, many chemical substances such as toluene and xylene were detected from the subject's skin gas compared to the control subjects. In addition, hexane, propionaldehyde, toluene, etc.
181575 tn?1250202386 Until recently, the preferred method for HCC screening included both liver ultrasound examination and measurement of serum alpha-fetoprotein (AFP). However, recent guidelines question the utility of AFP monitoring in HCC screening. Using 20 ng/mL as a cutoff value for abnormal AFP levels, serum AFP has a sensitivity of only 60%. Liver ultrasound exam has a sensitivity ranging between 65% and 80% and a specificity of more than 90% for the detection of HCC.