HQEsoterics

Collection Information

Collection Instruction

4.0 mL plasma from light green top tube(s). Also acceptable: gold top, red top, and lavender top tubes (EDTA). Plasma is the specimen of choice. However, serum is acceptable. Spin down and separate plasma/serum. Separate plasma from cells within 2 hours. Samples should be stored on ice between the time of centrifugation and sampling.

Preferred Specimen

Container:

Light Green/Gold/Red/Lavender (EDTA) Tube

Volume:

1 mL

Specimen Stability

2 Weeks (Refrigerated 2-8°C) 8 months Frozen

Process Information

CPT Code(s)

83090

Turnaround Time

1 Week

Reference Range

N/A

Reject Criteria

Specimens that exceed stated stability, unlabeled/mislabeled/mismatched specimens, specimens submitted in leaking containers, sodium citrate specimens.�Grossly hemolyzed and lipemic specimens.

Homocysteine