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Lab Test Dictionary

Glucopsychosine, Blood Spot (GPSY)


Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)


Glucosylsphingosine; Gaucher Disease; Lyso-GL1, LysoGl1

Specimen Type

Blood Spots

Performing Lab

Mayo Medical Lab

Epic ID

Other Reference Test

Lab Test Days


Standard TAT

2-7 Days

Collection Information

Specimen Required

1-2 Blood Spots collected on a Whatman Protein Saver 903 filter paper

Container Type

Blood Spot Card

Collection Instructions

1. Completely fill 1-2 circles on the filter paper card (approximately 100 microliters blood per circle). 2. Let blood dry on filter paper at room temp in a horizontal position for 3 or more hours. 3. Do not expose specimen to heat or direct sunlight. 4. Do not stack wet specimens. 5. Keep specimen dry.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp: 10 Days ; Refrigerated: 10 Days (Preferred); Frozen: 59 Days

Rejection Criteria

Blood spot specimen that shows serum rings; Insufficient specimen; Layering Multiple applications; Nonapproved filter paper

Test Volume Required

2 Blood Spots

Minimum Test Volume

1 Blood Spot

CPT Codes