Test Code GFR Glomerular Filtration Rate (GFR), Estimated, Plasma or Serum

Performing Laboratory

North Ottawa Community Hospital

Submit only 1 of the following specimens:

Preferred:

Specimen Type: Plasma

Container/Tube: Mint-green top (lithium heparin gel)

Specimen Volume: 1 mL

Collection Instruction:

1. Label specimen as plasma.

2. Avoid hemolysis and lipemia.

Acceptable:

Specimen Type: Serum

Container/Tube: Serum gel or red top

Specimen Volume: 1 mL

Collection Instruction:

1. Label specimen as serum.

2. Avoid hemolysis and lipemia.

>60 mL/min/1.732 m²

Monday through Sunday

This test is not orderable independently, but is a calculation based upon age, if >18 years old, and creatinine value.

Ambient