Test Details

Mnemonic

RBCF

Ordering Code

1000773

CPT-4 Code(s)

82747

Specimen Information

Patient Preparation

Fasting preferred
If specimen is submitted frozen, please provide hematocrit result. A hematocrit collected within
24 hours of the RBCF collection is acceptable if the patient has not received a transfusion or
experienced excessive bleeding in that 24 hour period.
Please note: Methotrexate and leucovorin may interfere with assay.

Collect

Lavender EDTA

Specimen Preparation

Send 3.0 mL whole blood (entire sample) in the original collection tube.

Alternate Specimen

Whole blood in K2EDTA (pink top) tubes are acceptable.

Minimum Volume

1.0 mL (mixed well)

Transport Temperature

Refrigerated

Rejection Criteria

Lipemia, clotted whole blood, plasma, serum

Stability

Room temperature: 8 hours
Refrigerated: 72 hours
Frozen: 60 months

Methodology

Chemiluminescence
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Reference Range

280 - 791 ng/mL
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Performing Laboratory

Warde Medical Laboratory
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