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Test Code LAB6765 Cystine, Serum

Performing Section

Biochemical Genetics

Specimen Type

Serum or Plasma:
Light Green Top Tube- Lithium Heparin (Preferred)
Red Top- Plain
Gold Top- SST
Dark Green Top- Sodium Heparin

Specimen Volume

Preferred: 0.9 mL (0.3mL serum/plasma)
Minimum: 0.6 mL (0.2 mL serum/plasma)

Processing Instructions

Green or Gold top-CENTRIFUGE per procedure / Red Top – Clot 60 minutes in upright position
Pipette off plasma or serum into pour off tube
Attach original tube to pour off tube with rubber band
Store and ship sample Frozen on dry ice.

Temperature

Frozen (dry ice)

Test Components

Cystine

Reference Range

0 up to 1 Months: 17-98 nmol/mL
1 Months up to 2 Years: 16-84 nmol/mL
2 Years up to 18 Years: 5-45 nmol/mL
18 Years and up 5-82 nmol/mL

TAT

3 days

CPT

82131