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Test Code LAB12350 Homocysteine - Quantitative

Department

CHEMISTRY

Collection Requirements

Draw on ice.

Primary Collection Container

Gold (SST)

Alternate Collection Container

Yellow Microtainer SST

Transport

Refrigerated

Preferred Transport Temperature

Refrigerated

Processing

Specimen MUST clot on ICE.

Separate and refrigerate within 1 hour of collection.

Freeze if testing is delayed past 48 hours.

Stability

1 Hour on Ice before Centrifugation.

After Centrifugation Stability:
Ambient: 4 days
Refrigerated: 48 hours
Frozen: 2 weeks

Minimum Testing Volume

0.5 mL

Reference Range

Adult: 4.0-15.4 umol/L

Methodology

Roche c503 Enzymatic assay.

Performed

Sunday – Saturday

Reported

1-3 days

CPT Codes

83090

Unacceptable Conditions

Hemolyzed.

Turbid serum.

Stored refrigerated longer than 48 hours.