Alpha-Galactosidase, Blood Spot
Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.
See Fabry Disease Testing Algorithm in Special Instructions.
Specimen Type Describes the specimen type needed for testing
Provide a reason for referral with each specimen.
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.
Supplies: Card-Blood Spot Collection (Filter Paper) (T493)
Preferred: Card-Blood Spot Collection (Filter Paper) (T493)
Acceptable: Ahlstrom 226 filter paper and Whatman Protein Saver 903 Paper
Specimen Volume: 2 blood spots
1. Do not use device or capillary tube containing EDTA to collect specimen.
2. An alternative blood collection option for a patient >1 year of age is fingerstick.
3. Let blood dry on the filter paper at ambient temperature in a horizontal position for 3 hours.
4. Do not expose specimen to heat or direct sunlight.
5. Do not stack wet specimens.
6. Keep specimen dry.
Additional Information: For collection instructions in Spanish, see Blood Spot Collection Card-Spanish Instructions (T777) in Special Instructions.
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 (T576) is available in Special Instructions.
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.
1 blood spot
Blood spot specimen that shows serum rings or has multiple layers
Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.
|Whole blood||Ambient (preferred)||90 days|