TABLE 4.

Results obtained in six patients with positive M. pneumoniae PCR results without positive serological criteria in the four EIAs

Patient no.	Sex	Age	Diagnosis(es)	Days after onset	Immunoglobulin	Titer (AU/ml)
						EIA-Plateliaa		EIA-Sorinb		EIA-BMDc		EIA-Biotestd
						Acute phase	Convalescent phase	Acute phase	Convalescent phase	Acute phase	Convalescent phase	Acute phase	Convalescent phase
1	F	5 mo	Asthmatic bronchitis	8
					IgG	<10	<10	<10	<10	<200	<200	<75	<75
					IgM	Neg	Neg	<10	<10	<770	<770	<65	<65
2	M	56 yr	Pneumonia, AIDS	5
					IgG	51	48	39	33	657	475	774	491
					IgM	Neg	Neg	32	30	<770	<770	205	150
3	F	67 yr	Pneumonia, respiratory distress	17
					IgG	<10	<10	<10	<10	<200	<200	<75	<75
					IgM	Neg	Neg	<10	20	<770	<770	<65	115e
4	M	21 yr	Pneumonia, renal transplant	9
IgG	28	21		17	19	1,129	1,343	898	801
					IgM	Neg	Neg	<10	<10	920e	908e	<65	<65
5	F	47 yr	Fever
					IgG	17	ND	<10	ND	<200	ND	<75	ND
					IgM	Neg	ND	<10	ND	903e	ND	<65	ND
6	M	71 yr	Pneumonia, wasting syndrome
IgG	<10	ND		13	ND	342	ND	91e	ND
					IgM	Neg	ND	<10	ND	<770	ND	<65	ND

^aNegative IgG, <10 AU/ml; negative IgM, OD sample < 0.8 × OD cutoff-serum.

^bNegative IgG and negative IgM, <10 AU/ml.

^cIgG: negative, <200 AU/ml; equivocal, 200 ≤ X < 320; positive, ≥320; IgM: negative, <770 AU/ml; equivocal, 770 ≤ X < 950; positive, ≥950.

^dIgG: negative, <75 U/ml; equivocal, 75 < X < 125; positive, >125; IgM: negative, <65 U/ml; equivocal, 65 < titer < 135; positive, >65.

^eEquivocal result or low titer.