AllRefer Health - Caring for your Well Being

Home | About | FAQs | Contact Us

AllRefer Channels :: Yellow Pages | Reference | Health  

Medical Tests & Exams
Select & Go
 Diet & Nutrition
 Diseases & Conditions 
 Injuries & Wounds
 Poisons & Overdoses
 Surgery & Procedures 
 Symptoms Guide
 Special Topics
 Tests & Exams
 Pictures & Images
 Medical Encyclopedia

You are here : AllRefer.com > Health > Tests & Exams > Hemoglobin derivatives

Hemoglobin derivatives

Alternate Names : Methemoglobin, Carboxyhemoglobin, Sulfhemoglobin


Definition

Hemoglobin derivatives are altered forms of hemoglobin, a protein in red blood cells that moves oxygen and carbon dioxide between the lungs and body tissues.

This article discusses the test used to detect and measure the amount of hemoglobin derivatives in your blood.

Why is the Test Performed?

This test is used to diagnose carbon monoxide poisoning and other changes in hemoglobin that may result from certain drugs. If certain chemicals or drugs get into the blood stream, they can change the hemoglobin so it no longer works properly.

For example, carboxyhemoglobin is an abnormal form of hemoglobin that attaches to carbon monoxide instead of oxygen or carbon dioxide. High amounts of this type of abnormal hemoglobin prevent the normal movement of oxygen by the blood.

Sulfhemoglobin is a rare abnormal form of hemoglobin that cannot carry oxygen. It may result from certain medicines such as phenacetin or sulfonamides.

Methemoglobin occurs when the iron that is part of hemoglobin is changed so that it does not carry oxygen well. Certain compounds introduced into the blood stream can cause this problem:

  • Sulfonamides
  • Chlorates
  • Nitrates
  • Nitrites
  • Aniline
  • Phenacetin

See also: Methemoglobinemia

How is the Test Performed?

The test is performed using a small needle to collect a sample of blood from an artery. The sample may be collected from an artery in the wrist, groin, or arm.

Before blood is drawn, the health care provider may test circulation to the hand (if the wrist is the site). After the blood is drawn, pressure applied to the puncture site for a few minutes stops the bleeding.

See also: Blood gases

How to Prepare for the Test?

No special preparation is needed.

If your child is going to have this test, it may help to explain how the test will feel, and even demonstrate on a doll. Explain the reason for the test. Knowing the "how and why" may reduce the anxiety your child feels.

How will the Test Feel?

When the needle is inserted to draw blood, you may feel moderate pain, or only a prick or stinging sensation. Afterward, there may be some throbbing.

Pictures & Images

Blood test
Blood test

       
      See all Pictures & Images



Quick Jump
1 | 2 | 3 | 4 | 5 | 6

Next
Risks & Considerations

Jump To Another Page

Review Date : 5/7/2009
Reviewed By : David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.



Featured Topics

Alzheimer's Disease

High Blood Pressure

Crohn's Disease

Impotence

Overactive Bladder

ADAM

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). URAC's accreditation program is the first of its kind, requiring compliance with 53 standards of quality and accountability, verified by independent audit. A.D.A.M. is among the first to achieve this important distinction for online health information and services. Learn more about A.D.A.M.'s editorial reviewers. A.D.A.M. is also a founding member of Hi-Ethics (www.hiethics.com) and subscribes to the principles of the Health on the Net Foundation (www.hon.ch).

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2003 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

This website is certified by Health On the Net Foundation. Click to verify.
This site complies to the HONcode standard for trustworthy health information: verify here.
Copyright © 2013 AllRefer.com All Rights reserved.
Health Topics: 0-9 A-AID Air-Aor Aor-Azo B-Blo Blo-Bys C-Cha Cha-Col Col-CSF CSF-Cyt D-Dis Dis-Dys E-Ess Est-Eye F-FSP FTA-Fus G H-Her Her-Hys I-Iod Ion-Ivy J K L-Luc Lud-Lym M-Min Min-Myx N O P-Pes Pes-Pre Pre-Pyr Q R-Rig Rig-RVA s-SID SID-Spu Spu-Sys T-Too Too-Typ U V W X Y Z
About Us | Help | Privacy Policy | Editorial Policy | Advertising Policy | Accessibility | Terms of Use
Contact Us | Link to Us
Page Last Updated: 28 Aug, 2014