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. Author manuscript; available in PMC: 2010 Oct 12.
Published in final edited form as: J Allergy Clin Immunol. 2009 Apr;123(4):949–955.e1. doi: 10.1016/j.jaci.2009.01.070

Table III.

Comparison of biological potency of cockroach extracts calculated based on N-hexosaminidase release* and ID50EAL in 6 responders**

Extract A Extract B Extract C
NHR
ED50 raw 0.008723 0.040477 0.032529
ED50 on log3 scale 2.589 1.192 1.391
Biological potency 0.386 0.839 0.719
ID50EAL
D50 raw 1.70E-06 1.21E-07 3.13E-07
D50 on log3 scale 12.091 14.497 13.632
Biological potency units 12282.98 172559.1 66754.09
*

Maximum release was measured at 4th 3-fold dilution.

**

Six responders in the RBL assay were subjects with highest NHR to 4th 3-fold dilution to all three cockroach extracts.