devender_naik
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Hyderabad,
2006-04-27 12:12
(6656 d 15:14 ago)

Posting: # 89
Views: 9,136
 

 volunteer screening [Bioanalytics]

Dear all,

Can any one, tell me why a period of about 21 days/ 28 days is considered for lab parameters (CBP, CUE... etc) as the valid period from the day of screening to participation in the study. Is there any specific reason for it? (As per FDA).
Helmut
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Vienna, Austria,
2006-04-27 13:59
(6656 d 13:26 ago)

@ devender_naik
Posting: # 92
Views: 6,839
 

 volunteer screening

❝ Can any one, tell me why a period of about 21 days/ 28 days is considered for lab parameters (CBP, CUE... etc) as the valid period from the day of screening to participation in the study. Is there any specific reason for it? (As per FDA).


Hello Devender!

Although I have no knowledge about a specific guideline published by the FDA, IMHO I would suggest two weeks as the maximum interval – some sponsors even insist in screening one day (!) before administration…

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