Skip to main content
. 2017 Aug 1;11(8):DC18–DC22. doi: 10.7860/JCDR/2017/28296.10417

[Table/Fig-1]:

Nugent’s scoring system and Interpretation of Nugent score.

No. of lactobacilli = Score No. of Gardnerella = Score, No. of Curved GNB = Score Sum = *N Score Interpretation of Nugent score
≥30 = 0 0 =0 0 = 0 0 Smear not consistent with BV
5-30 = 1 <1=1 <1=1 3
1-4 = 2 1-4 =2 1-4 =1 5 + Clue Cells not present Smear not consistent with BV
5 + Clue Cells are present Smear consistent with BV
<1 = 3 5-30 =3 5-30 =2 8 Smear consistent with BV
0 = 4 > 30 = 4 > 30 = 2 10

Laboratory examination of vaginal smears and the determination of the Nugent score / N Score = The sum of the scores for each bacterial morphotype listed below.