Does getting a blood test for your child seem daunting? If yes, understand that a blood test is a quick, minimally uncomfortable procedure that is important to assess your child’s health and find signs that may indicate underlying problems, which require early treatment for management. Learn about common pediatric blood tests for kids in this article. At Doral Health & Wellness, we have all the answers you need.
Why should you consider a blood test for your children?
Your pediatrician will recommend blood tests to check your child’s internal health to find signs that indicate underlying problems. These signs are not usually noticeable during a physical exam. That’s why doctors recommend conducting a blood test to detect problems early and get a closer look. These tests will help in:
- Diagnosing infections: Blood tests allow us to identify infections and their severity, which is crucial for diagnosing these common childhood illnesses like ear infections, strep throat, and urinary tract infections (UTIs). They also detect other infections, such as malaria, dengue, leptospirosis, and certain viral and parasitic infections.
- Identifying allergies: Specific blood tests allow you to evaluate allergies to certain foods or environmental triggers, helping you and your pediatrician to develop a personalized management plan to minimize reactions.
- Detecting anemia: This condition occurs when there is a deficiency of red blood cells, which carry oxygen throughout the body. Blood tests help to determine the type and severity of anemia for appropriate treatment.
- Assessing nutritional deficiencies: Blood tests help to identify deficiencies in essential nutrients like iron, vitamin D, or folic acid, which allow for dietary adjustments or supplementation.
- Monitoring chronic conditions: Children with chronic conditions like diabetes or thyroid disorder may need regular blood tests to monitor their status and adjustment in treatment, if needed.
- Diagnosing blood disorders: Blood tests also help to diagnose blood disorders such as leukemia or sickle cell disease, allowing early intervention and management.
Different types of blood tests for children
Here are the most common types of blood tests used for children.
Complete blood count (CBC):
This test helps to measure the amounts of different types of cells in the blood, along with health issues such as anemia or signs of possible infection. It provides information about the following:
- Number of red blood cells (RBCs)
- Number and types of white blood cells (WBCs)
- Number of platelets
- Amount of hemoglobin in the blood (a protein in RBCs that carries oxygen and contains iron)
- Information about the size, shape, or other traits of blood cells.
Blood smear:
This test is performed with a CBC to see blood cells under a microscope with a stain.
Blood grouping test:
Every blood cell has specific markers on its surface called antigens. These antigens are divided into the ABO system of blood grouping, making it 4 different types – A, B, AB, and O. Based on the antigens, one of the 4 blood groups is found in all human beings. There is another important antigen that categorizes with the blood groups, the RH antigen, which will be checked in this test.
Pediatric Lipid Profile:
This blood test helps to measure the amount of high-density lipoprotein (good cholesterol), the low-density lipoprotein (bad cholesterol), total cholesterol, and triglycerides (freely present fats) in the bloodstream, which show the risk of unhealthy lifestyles, increased obesity, and high cholesterol. This test is not used in children below the age of two or any pubescent teenagers due to fluctuating lipid levels in them. The normal values in children for lipid profile are as follows:
- Total Cholesterol level: <170 mg/dL
- LDL Cholesterol level: <110 mg/dL
- HDL Cholesterol level: 45 mg/dL or higher
- Triglyceride level: <100 mg/dL
Hemoglobin test:
This blood test is used to measure hemoglobin levels in the body to determine if a child has iron-deficiency anemia. This is recommended if your child shows signs of anemia, like pale fingernails, skin discoloration, and persistent weakness. It also helps to determine the child’s iron levels and hematocrit levels from a complete blood count. The important lab values for this examination are as follows:
- Age 0.5 to 5 years: 11 g/ dL or higher
- Age 6 to 12 years: 11.5 g/ dL or higher
- Age 12 to 18 years: 12 g/ dL or higher
Metabolic Panel:
This test is used to check different components levels in the body, including electrolytes (minerals that maintain bodily functions), blood sugar levels, kidney function, and liver function. The normal range of these minerals is as follows:
Components | Normal Values |
Sodium | 136 – 144 Meq/ L |
Potassium | 3.7 – 5.2 Meq/ L |
Chloride | 96 – 106 Mmol/ L |
Calcium | 8.5 – 10.2 Mg/ Dl |
Creatinine | 0.8 – 1.2 Mg/ Dl |
Bilirubin | 0.3 – 1.9 Mg/ Dl |
Albumin | 3.5 – 5.4 G/ Dl |
Total Protein | 6 – 8.3 G/ Dl |
Blood culture:
This test helps to diagnose bacterial infections in the bloodstream. The doctor will take a small blood sample and incubate it in a special medium to see if the bacteria grow, helping identify the specific type of bacteria causing the infection.
Allergy Testing:
This blood test is used to check the allergic reaction of the immune system to specific allergens. Doctors use a skin prick test, where small amounts of allergens are pricked onto the skin, or take a blood test to analyze the immune system’s reaction to the specific allergens.
What to expect – before, during, and after
Many parents get nervous about their child having a blood test, but this process is usually simple, quick, and minimally uncomfortable for children. Here’s what you should expect:
- Before the procedure, your child may not need fasting unless it is specifically instructed, depending on the type of test. If your child is nervous about the test, you can explain in simple terms and ask the doctor to help them feel better during the test.
- During the procedure, the doctor will draw blood from a vein in the arm. In the case of younger children, they may use the finger-prick test to draw a small amount of blood as required. The whole process will take some minutes. Some children may feel a little discomfort or a brief sting, but the process is quick and well-tolerated. The doctor will apply a numbing cream to the skin before the procedure to lower the discomfort. This allows the doctor to take the blood sample easily.
- After the procedure, a small round plaster or bandage is applied to the site to protect and stop any minor bleeding. A doctor may be asked to keep an eye on the area to ensure there are no signs of infection or excessive bleeding, which is rare. Usually, the child can return to normal activity after some time.
What do the results mean?
After the blood test is complete, your pediatrician will interpret the results and explain what they find in detail. In cases where any abnormalities are found, your doctor may recommend further testing, treatment, or lifestyle changes based on the specific condition.
Blood tests for kids are a vital part of their healthcare and provide valuable insights into their health, helping to diagnose or monitor many conditions. While a blood test for a child may seem daunting, the process is quick, safe, and minimally uncomfortable. You can talk with your pediatrician and take blood tests with proper discussion to ensure your child’s comfort. Need help with your child’s blood test for health concerns? Don’t worry, we are here to support you and provide professional medical help. If you ever have questions or feel uncertain about your care, we encourage you to speak up. Our team is here to listen and provide the clarity you deserve. For further inquiries, call us on +1- 718-367-2555 to get a consultation or visit us at 1797 Pitkin Avenue, Brooklyn, NY 11212. If you need help, register your information and make direct contact with us at https://yuz88hfiyh7.typeform.com/Doralintake.
