Test Overview
Test Methodology

Benzidine Base

Test Usage

To aid in the evaluation of hemolytic anemias and transfusion reactions. To monitor hemolysis in conjunction with ECMO treatment or use of LVAD.

Reference Range *

1.0-8.0 mg/dL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Daily; 8:00 am to 2:30 pm
Analytic Time

8 hours

Soft Order Code
HGBN
MiChart Code
Hemoglobin
Synonyms
  • Hemoglobin, Free
  • HEMOGLOBIN, SERUM
  • HGBN
Laboratory
Chemical Pathology
Section
Automation
Specimen Requirements
Collection Instructions

Collect specimen in a green top or SST tube. Centrifuge, aliquot plasma or serum into a plastic vial and refrigerate. Any hemolysis occurring during specimen collection invalidates the test.

Alternate Specimen
This test can be performed on Urine.
Rejection Criteria
EDTA and Citrate tubes are unacceptable as the chelating agents in these anticoagulants interferes with the peroxidase reaction. [8/05]
Yellow Top Tube
Normal Volume
1 mL plasma or serum
Minimum Volume
0.5 mL plasma or serum
Billing
CPT Code
83051
Fee Code
20715
LOINC
721-1
Resources