Homocysteine, total

Alphabetical Test listing

Homocysteine, total-4775

Test name:

Homocysteine, total

Test number:

4775

Excellian order number:

83090.0

Abbreviation:

HOM

Useful for:

Assist in the diagnosis and treatment of patients suspected of having homocysteinemia and homocystinuria

Specimen type:

Lithium heparin (Li hep) plasma

Collection container:

Lt green plasma separator (PST)

Volume:

1.0 mL

Collection instructions:

Immediately following collection, mix sample thoroughly by gently inverting 8 - 10, times to prevent clotting

Processing instructions:

Spin within 30 minutes of collection
1. If unable to spin within 30 minutes of collection, place sample on ice to be spun within 60 minutes of collection
Refrigerate

Transport container:

Lt green plasma separator (PST)

Alternate specimen type:

Serum

Alternate collection container:

Gold serum separator (SST) tube

Alternate collection instructions:

Immediately following collection, thoroughly mix sample by gently inverting 5 times

Alternate processing instructions:

Time sensitive

Gold SST

Clot on ice or in refrigerator for 60 min
Spin
Refrigerate
Cannot be added on to previous samples

Alternate transport container:

Gold serum separator (SST) tube

Transport and stability:

Refrigerated (preferred) - 4 weeks

Ambient - 4 days

Frozen - 10 months

Reason for rejection:

Improper labels (unlabeled or mislabeled)
Hemolysis
Improper anticoagulant or ratio
Delay in transport
Improper storage temperature affecting results
Improper container
Leaking container resulting in compromised specimen
Quantity not sufficient (QNS)

Performing lab:

AHL - Chemistry: C

Days set up:

Daily

TAT:

1 day

Method:

Enzymatic

Reference ranges:

<15 µmol/L

CPT codes:

83090

Date created:

11/30/2001

Revised date:

10/16/2024

Review date:

01/09/2024