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Lab Test Details

Lab Test Details

SIM

LAB70

CPT

82747; 85014 

Synonyms

Folates, RBC  

Specimen Type

Whole Blood  

Container

Two Lavender top (EDTA) tubes

Collection Instructions

Must have both tubes full

Volume

Volume:  4 mL in each tube 
Minimum volume: 4 mL in each tube 

Additional Information

Detect folate deficiency; monitor therapy with folate ; evaluate megaloblastic and macrocytic anemia 

Patient Preparation

Verify that patient has not had vitamins containing folic acid during the previous three to five days; if so, consult physician.  Patient should be cautioned to stop biotin consumption at least 72 hours prior to collection of a sample.

Specimen Processing Instructions

Transfer 4 mL from one whole blood tube into a plastic transport tube and freeze. Second whole blood tube should be at room temperature. 

Transport Requirements

Freeze one whole blood transport tube; store second whole blood specimen at room temperature.

Specimen Stability

Room Temperature : 1 day Hematocrit

Frozen : 14 days Folate

Rejection Criteria

No frozen whole blood; transport tubes with whole blood for the hematocrit portion

Reference Range

Reference range included in report

Critical Value

 

Test Includes

RBC folate; hematocrit 

Methodology

Electrochemiluminescence immunoassay (ECLIA) 

Testing Frequency

 

LCA

266015 

Reviewed By

Rhonda Crowe

Reviewed Date

2/27/23

Supplemental

* Denotes Reference Lab Test