Hemoglobin (Hb), Free, Qualitative, Urine Test

What is the purpose of this test?

Order this Hemoglobin (Hb), Free, Qualitative, Urine Test, which screens for hemoglobinuria by detecting hemoglobin in a urine sample. Hemoglobin, a protein molecule, is an essential component of red blood cells, responsible for transporting oxygen throughout the body. These cells have an average lifespan of about 120 days, after which they undergo a breakdown in the spleen, bone marrow, and liver, ultimately producing the components necessary for creating new red blood cells. However, if this process occurs within the bloodstream, the components may circulate freely, leading to complications. If the levels of hemoglobin in the blood become too high, it may result in a condition called hemoglobinuria, characterized by the presence of hemoglobin in the urine.

What conditions are associated with hemoglobinuria?

Several conditions may result in hemoglobinuria, including:

• Burns
• Crushing injury
• Hemolytic uremic syndrome (HUS)
• Kidney infection
• Kidney inflammation or injury (glomerulonephritis)
• Kidney tumor
• Malaria
• Paroxysmal nocturnal hemoglobinuria
• Paroxysmal cold hemoglobinuria
• Sickle cell anemia
• Thalassemia
• Thrombotic thrombocytopenic purpura (TTP)
• Transfusion reaction
• Tuberculosis

When should I order a Hemoglobin (Hb), Free, Qualitative, Urine Test?

Individuals may order this test if they have experienced symptoms related to hemoglobinuria. Common signs or symptoms of this condition may include:

• Abdominal pain
• Back pain
• Chest pain
• Blood clots
• Dark-colored urine
• Easy bruising or bleeding
• Headaches
• Shortness of breath
• Weakness or fatigue
• Pale skin
• Trouble swallowing