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Test ID: FMRBC    
Magnesium, Red Blood Cell

Specimen Type Describes the specimen type needed for testing

Metal Free EDTA Plasma
RBCS

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.

Collect whole blood from a metal-free EDTA (royal blue top) tube. Spin down and separate plasma and red blood cells immediately. Ship 2 mL plasma and 2 mL RBC in metal-free tubes, refrigerate.

 

Note: Both plasma and RBCs are required for testing.

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.

0.3 mL

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

Hemolysis

Mild reject; Gross reject

Thawing

Cold OK; Warm OK

Lipemia

NA

Icterus

NA

Other

All other collection tubes except Royal blue-top metal free EDTA

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
Metal Free EDTA PlasmaRefrigerated (preferred)5 days
 Ambient 72 hours
RBCSRefrigerated (preferred)5 days
 Ambient 72 hours