|Test Code||CEASF / CEASF-M|
|Test||CARCINOEMBRYONIC ANTIGEN (CEA), SPINAL FLUID|
|Description||Useful as a tumor marker for detecting meningeal carcinomatosis, intradural or extradural infiltration, or brain parenchymal metastasis from adenocarcinoma or squamous-cell carcinoma
NOTE: This test, when ordered on Medicare patients, is subject to the National Coverage Determination (NCD) policy "Carcinoembryonic Antigen". Please verify that the diagnosis code (ICD-9) you have chosen demonstrates medical necessity for the test as documented in the physician's patient record. The CMS web site or the NorDx Limited Coverage Documentation Guide are available to assist you with this verification. A properly executed Advance Beneficiary Notice (ABN) must be submitted with the specimen if medical necessity is not demonstrated by the ICD-9 code chosen.
|Specimen||0.5 mL (minimum: 0.4 mL) of spinal fluid. Send specimen FROZEN in plastic vial on dry ice.|
|Reference Values||< 0.6 ng/mL
Tumor markers are not specific for malignancy and values may vary by method.
|Analytic Time||1 Day|
|Day(s) Test Set Up||Monday through Sunday|