A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
FOLATE, RBC
Test CodeLAB8007
CPT Codes
82747, 85014
Includes
- Hematocrit
- RBC Folate
Preferred Specimen
2 Lavender tubes (EDTA)

Note: Send one lavender tube refrigerated and send one lavender tube frozen. Do not centrifuge - freeze entire tube.
Note: Send one lavender tube refrigerated and send one lavender tube frozen. Do not centrifuge - freeze entire tube.
Patient Preparation
None
Minimum Volume
0.5 mL (1 mL optimal)
Other Acceptable Specimens
1 Lavender tube (EDTA)

AND
1 Green tube (Heparin)

Note: Send one lavender tube refrigerated and one green tube frozen. Do not centrifuge - freeze entire tube.
AND
1 Green tube (Heparin)
Note: Send one lavender tube refrigerated and one green tube frozen. Do not centrifuge - freeze entire tube.
Instructions
Note: Include Hematocrit %, if hematocrit is performed by the sending facility, please include the value with the tube sent to Alverno Central Lab. Please note that the Hematocrit % must be collected within 24 hours of RBC Folate collection.
Process samples WITHIN 4 hours of collection as below:
Process samples WITHIN 4 hours of collection as below:
- Refrigerate one lavender tube to perdform HCT% (must submit EDTA whole blood)
- Freeze second lavender or green tube to perform RBC Folate (do not centrifuge or aliquot; freeze enitre lavender or green tube)
Transport Container
2 Lavender tubes OR 1 Lavender tube and 1 Green tube
Transport Temperature
Refrigerate one whole blood tube AND Freeze the second whole blood tube
Specimen Stability
- 2-8°C up to 4 hours
- The hemolysate may be frozen up to 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Improper storage temperature
Setup Schedule
M, W, F
Batched; Day shift
Batched; Day shift
Report Available
Results available within 24 hours of set up
Reference Range
366 - 1356 ng/mL packed RBCs
Clinical Significance
Folate is an essential vitamin vital to normal cell growth and DNA synthesis. It is present in a wide variety of foods such as dark, leafy vegetables, citrus fruits, yeast, beans, eggs, and milk. It is absorbed by the small intestine and stored in the liver. A folate deficiency can lead to megaloblastic anemia and ultimately to severe neurological problems.
Performing Laboratory
Alverno Central Lab