TY  - JOUR
T1  - URinalysis for bacteriuria
AU  - Hashimoto F, Reed W, Chongsiriwatana K
Y1  - 1979/10/01
N1  - 10.1001/archinte.1979.03630470101035
JO  - Archives of Internal Medicine
SP  - 1193
EP  - 1194
VL  - 139
IS  - 10
N2  - To the Editor.— 
    We enjoyed reading the article by Komaroff et al in the July Archives (138:1069-1073, 1978) and agree that the urinalysis, particularly the examination for bacteriuria, can be helpful in discriminating between a urinary tract infection and vaginitis. In their study, Kunin's criterion1 was used, which considers the counting of one to ten bacteria in an unstained urine sediment in a high-power dry microscopic field as a positive result. With 105/cc bacteria denoting an important level of bacteriuria, Kunin's method results in approximately 12% false-positives and about that many false-negatives.We favor checking for bacteriuria in an unspun urine specimen stained with methylene blue. This technique eliminates variabilities of urine centrifugation and affords better visualization of bacilli; the dye aids in distinguishing cocciform bacteria from urinary debris.1 Approximately 1/30,000 cc is contained in one highpower field, so that seeing one bacterium per field correlates
SN  - 0003-9926
M3  - doi: 10.1001/archinte.1979.03630470101035
UR  - http://dx.doi.org/10.1001/archinte.1979.03630470101035
ER  -