Bromide partition tests were performed on 58 children with suspected tuberculous meningitis (TBM). CSF adenosine deaminase activity (ADA) was measured at the same time. Four of the 33 patients with a final diagnosis of TBM had false-negative bromide partition ratios and 5 had false-negative CSF ADA levels. One of the 25 patients in whom TBM was excluded had a false-positive ratio and 4 had false-positive CSF ADA levels. The difference between the two tests was not significant. Both provide valuable evidence for or against a diagnosis of TBM.
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