Test Overview
Test Methodology

Nitrazine-pH indicator dye

Test Usage

Performed at authorized locations by point of care operators. To differentiate gastric from intestinal aspirates in the placement and maintenance of gastric or intestinal tubes when used in addition to four non-radiologic verification methods.

Reference Range *

Reference ranges are available in the pH Nitrazine Paper for Gastric and Amniotic Fluid test procedure located on the POC website: https://www.pathology.med.umich.edu/point-of-care.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Soft Order Code
MiChart Code
pH NG Fluid, Point of Care
Point of Care
Point of Care
Specimen Requirements
Collection Instructions

Flush tube with 3 mL of air before aspirating gastric or intestinal specimen. Withdraw sufficient volume to ensure that any feeding left in the tube lumen does not affect pH.

Additional Information

For more test specific information, please refer to the test procedure found on the Michigan Medicine POC website: https://www.pathology.med.umich.edu/point-of-care

CPT Code