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Test Code PLHBB Plasma Free Hemoglobin, Plasma

Reporting Name

Plasma Free Hemoglobin, P

Useful For

Determining whether hemolysis is occurring such as from:

-Transfusion reaction

-Mechanical fragmentation of red blood cells

-Relative comparison to baseline levels in extracorporeal membrane oxygenation and centrifugal ventricular assist device patients to assess pump disruption

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Plasma EDTA


Specimen Required


Collection Container/Tube: Lavender top (EDTA)

Submission Container/Tube: Plastic vial

Specimen Volume: 2 mL

Collection Instructions:

1. Centrifuge and transfer plasma to a plastic vial within 2 hours of collection.

2. Results could be falsely elevated due to artifactual red blood cell lysis if not centrifuged within 2 hours of collection.


Specimen Minimum Volume

1.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Plasma EDTA Refrigerated (preferred) 20 days
  Frozen  30 days
  Ambient  4 days

Reference Values

TOTAL PLASMA HEMOGLOBIN

≥12 months: 0.0-15.2 mg/dL

Reference values have not been established for patients who are younger than 12 months of age.

 

OXYHEMOGLOBIN

≥12 months: 0.0-12.4 mg/dL

Reference values have not been established for patients who are younger than 12 months of age.

Day(s) Performed

Monday through Sunday

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

83051

LOINC Code Information

Test ID Test Order Name Order LOINC Value
PLHBB Plasma Free Hemoglobin, P 87433-9

 

Result ID Test Result Name Result LOINC Value
31970 Total Plasma Hemoglobin 721-1
31971 Oxyhemoglobin 87437-0

Interpretation

An elevation in plasma hemoglobin above the reference range indicates likely intravascular hemolysis due to one of the causes listed in the Useful For section.

Clinical Reference

1. Lubnow M, Philipp A, Foltan M, et al. Technical complications during veno-venous extracorporeal membrane oxygenation and their relevance predicting a system-exchange-retrospective analysis of 265 cases. PloS One. 2014;9(12):e112316

2. Hayes D Jr, McConnell PI, Preston TJ, Nicol KK. Hyperbilirubinemia complicating plasma-free hemoglobin and antifactor Xa level monitoring on venovenous extracorporeal membrane oxygenation. World J Pediatr Congenit Heart Surg. 2014;5(2):345-347

Report Available

1 to 3 days

Method Name

Spectrophotometry (SP)

Forms

If not ordering electronically, complete, print, and send a Benign Hematology Test Request Form (T755) with the specimen.