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St. John Health System
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Homocysteine, Total, Urine

Order Name HOMOCYST U
Test Number: 3631525
Revision Date 01/17/2012
Test Name Methodology LOINC Code
Homocysteine, Total, Urine
Fluorescence Polarization Immunoassay  
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred Two Samples Urine, Random Sterile Screwtop Container Frozen
Instructions Fasting for 10 hours is recommended.
From one thoroughly mixed Random Urine, divide into two sterile containers:
(#1) 5mL(2.5mL) in sterile screwcap container for Homocystine AND
(#2) 5mL(2.5mL) in sterile screwcap container for Creatinine testing. Freeze immediately - send both samples together.
GENERAL INFORMATION
Testing Schedule Mon, Wed, Fri 
Expected TAT 3-4 Days 
CPT Code(s) 83090; 82570
Internal Comments Group Test
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Reference Lab