Test ID: PFR
Porphyrins, Fractionation, Reflex
Specimen Type 
Describes the specimen type needed for testing
Washed RBC
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.
Only orderable as part of a reflex test. For further information see PEE/88886 Porphyrin Evaluation, Erythrocytes.
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.
Whole blood: 3 mL
Washed & resuspended erythrocytes: 1 mL
Washed & resuspended erythrocytes: 1 mL
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 Type | Temperature | Time |
|---|---|---|
| Washed RBC | Frozen | 21 days |
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