although the efficacy of the assay for cea in csf must be compared with that of other laboratory tests such as cytologic examination and the assay for beta-glucuronidase -- and any potentially false-positive results should be ruled out by determination of the serum cea level -- the cea concentration in csf can be used as an adjunctive diagnostic procedure for detection of meningeal carcinomatosis .
C0022885
laboratory tests
C0430022
diagnostic procedure