Average pH of human tears

Value 7 pH units Range: 6.5 - 7.6 pH units
Organism Human Homo sapiens
Reference Abelson, Mark B., Ira J. Udell, and Judith H. Weston. "Normal human tear pH by direct measurement." Archives of ophthalmology 99.2 (1981): 301-301. abstractPubMed ID7469869
Comments Abstract:"Tear pH was measured in 44 normal subjects by immersing the tip of a microcombination glass pH probe in the tear fluid in the inferior cul-de-sac. The normal pH range was 6.5 to 7.6 the mean value was 7.0."
Entered by Avi Flamholz
ID 111613