Table 1.

ANA staining patterns with ICAP nomenclature in relation to mean age and sex among the 825 healthy blood donors.

ICAP	Pattern	HEp-2 positive (n)	Positive (%)	Mean age (years)	Female sex (%)
AC-1	Homogenous	20	2.4	41.5	80
AC-1, -4, -5	Homogenous/Speckled	18	2.2	43.0	50
AC-4, -5	Speckled	11	1.3	47.3	55
AC-6	Nuclear dots	1	0.1	59.0	100
AC-8, -9, -10	Nucleolar	9	1.1	37.8	44
Positive	Any	59	7.2	42.8	61