Supplemental Newborn Screen, Blood Spot
Specimen Type Describes the specimen type needed for testing
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.
Patient must be >24 hours and <1 week of age. A repeat specimen is required within 1 week of birth for infants <24 hours old.
Preferred: Supplemental Newborn Screening Card (Supply T493)
Acceptable: Whatman Protein Saver 903 Paper and Ahlstrom 226 filter paper
Specimen Volume: 5 blood spots
1. Let blood dry on the filter paper at ambient temperature in a horizontal position for 3 hours.
2. Do not expose specimen to heat or direct sunlight.
3. Do not stack wet specimens.
4. Do not use devices or capillary tubes.
5. Keep specimen dry.
Additional Information: Patient education brochures in English (Supply T523) and Spanish (Supply T535) are available upon request.
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.
Blood Spots: 3
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)|