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Test ID: REVP    
Erythrocytosis Evaluation

Specimen Type Describes the specimen type needed for testing

WB Sodium Heparin
Whole Blood EDTA

Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.

A total of 3 specimens are required to perform this profile; all 3 specimens must arrive within 72 hours of draw:

-Whole blood EDTA for A2F, HBEL, IEF

-Whole blood sodium heparin for P50*

-Normal shipping control: Whole blood sodium heparin for P50*

*Please note: If no sodium heparin patient or control specimens are received, the P50 test cannot be performed.



Container/Tube: Lavender top (EDTA) and green top (heparin)

Specimen Volume:

EDTA: 5 mL

Heparin: 4 mL

Collection Instructions:

1. Immediately refrigerate specimens after draw.

2. Send specimen in original tube. Do not aliquot.

3. Rubber band patient specimen and control vial together.

Additional Information: 

1. Patient's age and sex are required.

2. For information on thalassemias and appropriate test ordering, see Thalassemia Tests in Special Instructions.


1. New York Clients-Informed consent is required. Please document on the request form or electronic order that a copy is on file. An Informed Consent for Genetic Testing (Supply T576) is available in Special Instructions.

2. Thalassemia/Hemoglobinopathy Patient Information Sheet (Supply T358) is available in Special Instructions

3. Erythrocytosis Patient Information Sheet (Supply T694) is available in Special Instructions


Normal Shipping Control:

Container/Tube: Green top (heparin)

Specimen Volume: 4 mL

Collection Instructions:

1. Draw a control specimen from a normal (healthy), unrelated, nonsmoking person at the same time as the patient.

2. Label clearly on outermost label normal control.

3. Immediately refrigerate specimen after draw.                             

4. Send specimen in original tube. Do not aliquot.

5. Rubber band patient specimen and control vial together.

Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.

EDTA: 2.5 mL/Heparin: 1 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected


Mild OK; Gross reject








Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.

Specimen TypeTemperatureTime
ControlRefrigerated72 hours
WB Sodium HeparinRefrigerated72 hours
Whole Blood EDTARefrigerated72 hours