Table 1.

Patient's serum allergen values^a

RAST test	Immunoglobulin E level, U/mL
Vitamin B1	0.13	(negative)
Vitamin B2	0.16	(negative)
Vitamin B12	0.18	(negative)
Dermatophagoides pteronyssinus	0.09	(negative)
Dermatophagoides farina	0.08	(negative)
Erect pellitory-of-the-wall (Parietaria officinalis)	0.09	(negative)

^aRAST test, radioallergosorbent test. (Levels 0-0.35 U/mL negative, 0.35-0.70 U/mL low possibility for allergy, 0.70-3.50 U/mL positive with low immunoglobulin E levels, 3.50-17.50 positive with high immunoglobulin E levels,17.50-52.50 positive with very high immunoglobulin E levels.)