We have found that it will sometimes take at least 72 hours before the reaction is complete enough to make a 

 reading. Therefore, 72 hours should be allowed even though it is often possible to report results in 48 hours. 



It has been noted that unreliable reactions are produced if the lyophilized antigen does not retain a vacuum 

 during storage. Therefore any vial not containing a vacuum should be returned to the company. 



The results of laboratories participating in the check testing program were generally very good. This replication 

 of test results between laboratories will insure that the EIA ID test will continue to be regarded as an accurate 

 diagnostic technique. 



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