Visit our foundation to give a gift.
View Locations Near Me
Main Campus – Hartford
Connecticut Children’s – Waterbury
Urgent Care – Farmington
Specialty Care Center – Danbury
Connecticut Children’s Surgery Center at Farmington
Specialty Care Center – Fairfield
Search All Locations
Find a doctor
Find A Doctor
Request an Appointment
Amenities and Services
Who’s Who on Care Team
Getting Ready for Surgery
What to Expect—Picture Stories
Pay a Bill
Understanding the Different Fees
Pricing Transparency and Estimates
Raytheon Technologies Family Resource Center
Family Advisory Council
Legal Advocacy: Benefits, Education, Housing
Electronic Health Records
Share Your Story
Pay a Bill
Login to MyChart
Clinical Support Services Referrals
About the Network
Join the Network
Graduate Medical Education
Continuing Medical Education
MOC/Practice Quality Improvement
Educating Practices in the Community (EPIC)
Learning & Performance
Meet our Physician Relations Team
Request Medical Records
Join our Referring Provider Advisory Board
View our Physician Callback Standards
Read & Subscribe to Medical News
Register for Email Updates
Update Your Practice Information
Refer a Patient
Find and Print Health Info
Health Information For Parents
A blood test is when a sample of blood is taken from the body to be tested in a lab. Doctors order blood tests to check things such as the levels of glucose, hemoglobin, or white blood cells. This can help them detect problems like a disease or medical condition. Sometimes, blood tests can help them see how well an organ (such as the liver or kidneys) is working.
A CRP test measures the level of C-reactive protein in the body. C-reactive protein levels can be high when there is inflammation or infection.
A CRP test may be done if a child has signs of inflammation or infection. CRP tests are used to follow conditions such as inflammatory bowel disease (IBD), arthritis, and lupus. CRP tests also can help doctors see how well treatment for inflammation or infection is working.
Your child may be asked to stop eating and drinking for 8 to 12 hours before the CRP test. Tell your doctor about any medicines your child takes because some drugs might affect the test results.
Wearing a T-shirt or short-sleeved shirt for the test can make things easier for your child, and you also can bring along a toy or book as a distraction.
Most blood tests take a small amount of blood from a vein. To do that, a health professional will:
In babies, blood draws are sometimes done as a “heel stick collection.” After cleaning the area, the health professional will prick your baby’s heel with a tiny needle (or lancet) to collect a small sample of blood.
Collecting a sample of blood is only temporarily uncomfortable and can feel like a quick pinprick.
Parents usually can stay with their child during a blood test. Encourage your child to relax and stay still because tensing muscles can make it harder to draw blood. Your child might want to look away when the needle is inserted and the blood is collected. Help your child to relax by taking slow deep breaths or singing a favorite song.
Most blood tests take just a few minutes. Occasionally, it can be hard to find a vein, so the health professional may need to try more than once.
The health professional will remove the elastic band and the needle and cover the area with cotton or a bandage to stop the bleeding. Afterward, there may be some mild bruising, which should go away in a few days.
Blood samples are processed by a machine, and it may take a few hours to a day for the results to be available. If the test results show signs of a problem, the doctor might order other tests to figure out what the problem is and how to treat it.
A CRP test is a safe procedure with minimal risks. Some kids might feel faint or lightheaded from the test. A few kids and teens have a strong fear of needles. If your child is anxious, talk with the doctor before the test about ways to make the procedure easier.
A small bruise or mild soreness around the blood test site is common and can last for a few days. Get medical care for your child if the discomfort gets worse or lasts longer.
If you have questions about the CRP test, speak with your doctor or the health professional doing the blood draw.
Kids can get a kind of arthritis that causes joint pain. Find out more in this article for kids.
A blood test might sound scary, but it usually takes less than a minute. Watch what happens in this video for kids.
These videos show what’s involved in getting a blood test and what it’s like to be the person taking the blood sample.
Lupus is known as an autoimmune disease in which a person’s immune system mistakenly works against the body’s own tissues.
Lupus is a disease that affects the immune system. Learn how lupus is treated, signs and symptoms, how to support a friend who has it, and more.
A basic metabolic panel (BMP) is a group of blood tests that provide doctors with clues about how the body is working. Find out why doctors do this and what’s involved for teens.
Blood tests and insulin injections can be a challenge for kids with diabetes and their parents. Here are some strategies for coping with these necessary procedures.
An erythrocyte sedimentation rate test (ESR) detects inflammation that may be caused by infection and some autoimmune diseases.
Learn about juvenile idiopathic arthritis, a specific kind of arthritis that usually occurs in kids and teens younger than 17.
In juvenile idiopathic arthritis (also called juvenile rheumatoid arthritis)), a person can develop swollen, warm, and painful joints. Learn more.
An alanine aminotransferase (ALT) blood test is often part of an initial screening for liver disease.
Doctors may order bilirubin blood tests for infants or older kids if they see signs of the skin taking on the yellow discoloration known as jaundice.
This test measures the speed at which red blood cells fall to the bottom of an upright glass test tube. Find out why doctors do it and what’s involved for teens.
Inflammatory bowel disease (IBD) refers to two chronic diseases that cause intestinal inflammation: ulcerative colitis and Crohn’s disease. Although they have features in common, there are some important differences.
Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.
© 1995-2020 KidsHealth®. All rights reserved.
Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.