5-Methyltetrahydrofolate
Order Code: 5MTHF
Epic Lab Code: LAB5823
Order Form: A-1a Miscellaneous Request or Epic Req
Commercial Mail-out Laboratory
6240 RCP
356-3527
Specimen:
Cerebrospinal Fluid (CSF)
Collection Medium:
CSF Collection Tubes
Minimum:
Absolute Minimum: 0.5 mL CSF
Delivery Instructions:
Submit specimen to laboratory as soon as possible after collection.
Specimen Instructions:
Call laboratory to obtain appropriate sample collection containers. Each set consists of 5 numbered centrifuge tubes in a small plastic bag. Tube #3 contains antioxidants necessary to protect the sample from oxidation. One set of tubes is required per patient. The total CSF volume required is 3.5 mL. CSF should be collected directly from the tap needle: Collect from the first drop in to the containers in the order indicated. Fill each tube to the marked line (0.5 mL in tubes 1, 2, and 5 - 1.0 mL in tubes 3 and 4). Attach patient identifies to each tube without covering the tube number. If there is no blood contamination, place the tubes into a biohazard bag and place on ice (or dry ice if available) at the beside.
Analytic Time:
2 weeks upon receipt at reference laboratory
Reference Range:
Age (years) (nmol/L) 0-0.2 40-240 0.2-0.5 40-240 0.5-2.0 40-187 2.0-5.0 40-150 5.0-10 40-128 10-15 40-120 Adults 40-120
Interpretive Data:
Marker for cerebral folate deficiency syndromes.
Comments:
Please print, complete and submit to the lab, the Neurochemistry Test Requisition from Medical Neurogenetics, with the specimen and the A-1a Miscellaneous Request.
CPT Code:
82491