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Lab Test Dictionary

Tay-Sachs Disease Mutation Analysis (90903)


Allele-Specific Primer Extension; Fluorescent Detection Using Color Coded Miscospheres; Polymerase C

Specimen Type

Whole Blood

Performing Lab

Quest Diagnostics San Juan Capistrano

Epic ID


Lab Test Days

Tuesday and Thursday; A.M.

Standard TAT

7 Days

Collection Information

Specimen Required

4 mL Blood

Container Type

Lavender (EDTA)

Collection Instructions

Whole blood collected in an ACD solution A/B (yellow-top, EDTA (royal blue-top), sodium heparin (dark green-top) or lithium heparin (dark green-top) tube are also acceptable. Amniotic, Cultured amniocytes, or Chroionic villus sampling are acceptable as well.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp: 8 Days; Refrigerated: 8 Days; Frozen: Unacceptable

Rejection Criteria

Call lab if whole blood is received frozen

Test Volume Required

4 mL Whole Blood

Minimum Test Volume

3 mL Whole Blood

CPT Codes