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Lab Test Dictionary

Hexosaminidase A Enzyme


Synonyms

Tay Sachs Disease; Hex A

Specimen Type

Whole Blood

Performing Lab

Jefferson Lysosomal Diseases Testing Lab


Epic ID

Other Reference Test

Lab Test Days

Thursday

Standard TAT

7 Days


Collection Information

Specimen Required

2-4 mL Whole Blood

Container Type

Dark Green (Sodium Heparin)

Collection Instructions

Whole blood collected in a lithium heparin (dark green-top) tube is also acceptable. Collect Monday-Thursday between 0800-1300 only, no weekends or holidays. MUST INCLUDE CLINICAL HISTORY or most recent progress notes by ordering physician - TEST WILL NOT BE PERFORMED UNTIL PATIENT HISTORY FORM IS RECEIVED.


Processing Information - Lab Use Only

Transport Temperature

Ambient-Only

Specimen Stability

Room Temp=24 Hours; Refrigerated=Unacceptable; Frozen=Unacceptable

Test Volume Required

4 mL Whole Blood

Minimum Test Volume

2 mL Whole Blood

Processing Instructions

Complete a Jefferson Lysosomal Diseases Testing requisition and submit completed Patient History form from physician or print most recent progress notes to send with specimen room temp Monday-Thursday only, no weekends or holidays. MUST INCLUDE CLINICAL HISTORY or most recent progress notes by ordering physician - TEST WILL NOT BE PERFORMED UNTIL PATIENT HISTORY FORM IS RECEIVED.


CPT Codes

82657


Revised

05-16-21

Initials

SL