Table 3. Additional lactamases detected by the microarray in comparison to conducted control PCRs.

	Primer forward	Sequence	Primer reverse	Sequence	lengths (bp)	Reference	No. of Isolates	No. of Isolates	% Concordance
							Ma	PCRb
blaOXA-1	prim_oxa1_20_fwd	5′-TTCTGTTGTTTGGGTTTCGC-3′	prim_oxa1_20	5′-ACGCAGGAATTGAATTTGTTC-3′	190	this study	16	16	100
blaOXA-2	prim_oxa2_10_fwd	5′-GTTAATGGCAATCCGAATCTT-3′	prim_oxa2_10	5′-GGATCGTGCCATGTTGG-3′	176	this study	4	4	100
blaOXA-9	prim_oxa9_10_fwd	5′-TGTGTCTCCGTGCTCGTCTT-3′	prim_oxa9_10	5′-CCGATCAACTCCCAGACG-3′	207	this study	33	33	100
blaOXA-10	prim_oxa7_10_fwd	5′-TGGAACAAAGAGTTCTCTGCC-3′	prim_oxa7_10	5′-GGCTTTCCGTCCCATTTG-3′	207	this study	3	3	100
blaOXA-51	lb_oxa_654_fwd	5′-AGCCTGCTCACCTTATATAGTGACT-3′	lb_oxa_654	5′-TTGAAGGTCGAAGCAGGTA-3′	201	this study	25	25	100
blaOXA-58	lb_oxa_657_fwd	5′-GCCAATGCACTAATTGGTTTAGA-3′	lb_oxa_657	5′-GCAATTCACTTTGCATTAAGCT-3′	193	this study	2	2c	100
blaCTX-M1/15	prim_ctxM1_10_fwd	5′-AGGCGTTTTGACAGACTATTCA-3′	prim_ctxM1_10	5′-CCGTTTGCGCATACAGC-3′	152	this study	17	17	100
blaVIM	DG_VIM-cons_fwd	5′-GATGGYGTTTGGTCGCATATCKCAAC-3′	DG_VIM-cons_rev	5′-CGAATGCGCAGCACCRGGATAGAA-3′	390	this study	1	1d	100
						Total concordance	101	101	100

^aResults were obtained using the microarray-based carbapenemases array, designed in this study.

^bResults were obtained by PCR designed in this study.

^cOne blaOXA-58 was detected in an OXA-23 negative strain tested by microarray, which was originally tested as an OXA-23 positive strain by the national reference center.

^d BlaVIM was detected in addition to an IMP carbapenemase gene.