Test Catalog

Test ID: SCDT2    
Severe Combined Immunodeficiency Syndrome (SCID) Newborn Screening, Blood Spot

Specimen Type Describes the specimen type validated for testing


Necessary Information

1. Birth weight (grams)

2. Time of birth (24 hour time)

3. Gestational age (weeks)

Specimen Required Defines the optimal specimen required to perform the test and the preferred volume to complete testing

To maximize the benefit of early identification the specimen should be collected as early as possible after 12 hours of age and before 1 week of age.


Supplies: Card-Blood Spot Collection Filter Paper (T493)


Preferred: Blood Spot Collection Card

Acceptable: Ahlstrom 226 filter paper and Whatman Protein Saver 903 Paper

Specimen Volume: 1 Blood spot

Collection Instructions:

1. Do not use device or capillary tube containing EDTA to collect specimen.

2. Do not expose specimen to heat or direct sunlight.

3. Do not stack wet specimens.

4. Keep specimen dry.

5. If collection of a new specimen is necessary, let blood dry on the Blood Spot Collection Card (T493) at ambient temperature in a horizontal position for 3 hours.

Additional Information:

1. For collection instructions, see Blood Spot Collection Instructions in Special Instructions.

2. For collection instructions in Spanish, see Blood Spot Collection Card-Spanish Instructions (T777) in Special Instructions.

3. For collection instructions in Chinese, see Blood Spot Collection Card-Chinese Instructions (T800) in Special Instructions.

Special Instructions Library of PDFs including pertinent information and forms related to the test


1. New York Clients-Informed consent is required. Document on the request form or electronic order that a copy is on file. The following documents are available in Special Instructions:

-Informed Consent for Genetic Testing (T576)

-Informed Consent for Genetic Testing-Spanish (T826)

2. Molecular Genetics: Congenital Inherited Diseases Patient Information (T521) in Special Instructions

Specimen Minimum Volume Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory

1 completely filled circle on filter paper card

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

All specimens will be evaluated by Mayo Clinic Laboratories for test suitability.

Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen TypeTemperatureTimeSpecial Container
VariesAmbient (preferred)