Table 1: Agreement of MALDI-TOF MS with standard biochemical or molecular identification for HACEK and related genera using different identification cutoff scores.

Conventional or Molecular Identification Method No. of Isolates Genus IDa
(Score ≥ 1.5)
Species ID
(Score ≥ 1.7)
No. IDb
(Score < 1.5)
Erroneous ID Genus ID (Score ≥ 1.7) Species ID (Score ≥ 2.0) No. ID
(Score < 1.7)
Actinobacillus ureae 5 5 5 5 5
Aggregatibacter actinomycetemcomitans 4 4 4 4 4
Aggregatibacter aphrophilus 10 10 9 9 6 1
Aggregatibacter segnis 2 2 2 2 2
Capnocytophaga gingivalis 2 2 2 2 1
Capnocytophaga granulosa 1 1 1 1 1
Capnocytophaga ochracea 4 4 4 4 4
Capnocytophaga sputigena 15 15 15 15 14
Cardiobacterium hominis 2 2 0 0 0 2
Dysgonomonas capnocytophagoides 1 1 1 0
Dysgonomonas gadei 1 1 1
Eikenella corrodens 16 16 15 15 14 1
Haemophilus influenzae 11 11 11 11 10
Haemophilus parahaemolyticus 1 1 1 1 1
Haemophilus parainfluenzae 12 12 12 12 9
Kingella denitrificans 13 13 13 1
Kingella kingae 4 4 4 4 4
Leptotrichia trevisanii 2 2 2 2 2
Mannheimia haemolytica 1 1 1 1 1
Moraxella lacunata 6 6 6 6 0
Moraxella nonliquefaciens 5 5 5 5 5
Moraxella osloensis 11 11 9 9 3 2
Neisseria bacilliformis 1 1 1 1 0
Neisseria elongata spp. glycolytica 1 1 1
Neisseria canis 2 2 0 2
Neisseria weaveri 1 1 1 1 0
Pasteurella canis 6 6 6 6 6
Pasteurella dagmatis 2 2 2 2 1
Pasteurella multocida 10 10 10 10 10
Pasteurella pneumotrophica 1 1 1 1 1
Pasteurella stomatis 1 1 1 1 1
Sutonella indologenes 1 1 1 1 1
Total n (%) 155 152 (98.06) 144 (92.90) 2 (1.29) 1 (0.64) 145(93.55) 107 (69.03) 10 (6.45)

aID: identification; bNO ID: not reliable identification