The phrase "a valid indication for" is correct and usable in written English.
It is typically used in medical or scientific contexts to refer to a reason or justification for a particular action or treatment.
Example: "The presence of these symptoms is a valid indication for further testing to determine the underlying condition."
Alternatives: "a legitimate reason for" or "a justifiable cause for".
Suspicion of paradoxal embolism in the absence of other causes is also a valid indication for defect closure [16, 17].
Moreover, the diagnosis of migraine seems to be a valid indication for a higher headache frequency or a stability of headache over time, respectively.
Considering the proportion agreeing on a valid indication for MRE, only two indications exceeded 80%%: the initial diagnosis and follow-up of Crohn's disease [6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18].
In both cases, there was a valid indication for antibiotic use.
Screening of the contralateral breast in patients with proven unilateral breast cancer is thus a valid indication for the performance of preoperative breast MRI.
The results of our analysis of clinical trials that have investigated the association between migraine and total serum vitamin D suggest that this relationship lacks reliable scientific support, so that this condition does not represent a valid indication for testing.
Therefore I would not consider it a valid indication of the real support The Times has for running this article.
Are proxy responses given by care-givers a valid indication of the HRQoL of their children who have functional limitations?
In any case the brief description by Savigny is a valid indication [25, Art. 12.2.] of the identity of the worm and intent of the author.
Our interpretation of the results is based on the assumption that the retrospective then-test data provides a more valid indication of baseline IQoL for comparison with 3 month data than does the baseline assessment itself.
