铅含量-血液
定义
Blood lead level is a test that measures the amount of lead in the blood.
选择的名字
血铅水平
如何执行测试
需要血液样本. Most of the time blood is
In infants or young children, a sharp tool called a lancet may be used to puncture the skin.
- The blood collects in a small glass tube called a pipette, or onto a slide or test strip.
- A bandage is put over the spot to stop any bleeding.
How to Prepare for the Test
No special preparation is needed.
For children, it may be helpful to explain how the test will feel and why it is done. This may make the child feel less nervous.
考试的感觉如何
You may feel slight pain or a sting when the needle is inserted. You may also feel some throbbing at the site after the blood is drawn.
为什么要进行测试
This test is used to screen people at risk for 铅中毒. This may include industrial workers and children who live in urban areas. The test is also used to diagnose 铅中毒 when a person has symptoms of the condition. It is also used to measure how well treatment for 铅中毒 is working. Lead is common in the environment, so it is often found in the body in low levels.
正常的结果
Small amounts of lead in adults are not thought to be harmful. However, even low levels of lead can be dangerous to infants and children. 它会导致
成人:
- Less than 10 micrograms per deciliter (µg/dL) or 0.48 micromoles per liter (µmol/L) of lead in the blood
孩子们:
- 少于3.5µg/dL或0.17 µmol/L of lead in the blood
Normal value ranges may vary slightly among different laboratories. Talk to your health care provider about the meaning of your specific test results.
What Abnormal Results Mean
In adults, a blood lead level of 5µg/dL或0.24 µmol/L or above is considered elevated. Treatment may be recommended if:
- Your blood lead level is greater than 80 µg/dL or 3.86µmol / L.
- You have symptoms of 铅中毒 and your blood lead level is greater than 40 µg/dL or 1.93µmol / L.
儿童:
- 血铅含量3.5µg/dL或0.17 µmol/L or greater requires further testing and monitoring.
- The source of lead must be found and removed.
- A lead level greater than 45 µg/dL or 2.17 µmol/L in a child's blood most often indicates the need for treatment.
- Treatment may be considered with a level as low as 20 µg/dL or 0.97µmol / L.
参考文献
Bluth MH, Pincus MR, Abraham NZ. Toxicology and therapeutic drug monitoring. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 24日艾德. Philadelphia, PA: Elsevier; 2022:chap 24.
Centers for Disease Control and Prevention website. 血铅水平 in children. What do you need to know to protect children?
Center for Disease Control and Prevention website. Childhood 铅中毒 prevention: blood lead reference value.
Center for Disease Control and Prevention website. Childhood 铅中毒 prevention: recommended actions based on blood lead level.
Kao LW, Rusyniak DE. Chronic poisoning: trace metals and others. In: Goldman L, Schafer AI, eds. Goldman-Cecil医学. 26日艾德. Philadelphia, PA: Elsevier; 2020:chap 19.
马科维茨米. 铅中毒. 在:Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics. 21艾德. Philadelphia, PA: Elsevier; 2020:chap 739.
Ruckart PZ, Jones RL, Courtney JG, et al. Update of the Blood Lead Reference Value - United States, 2021. MMWR Morb Mortal Wkly Rep. 2021;70(43):1509-1512. PMID: 34710078
审核日期: 06/20/2023
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. 版权所有©2019 A.D.A.M.公司., as modified by University of California San Francisco. Any duplication or distribution of the information contained herein is strictly prohibited.
Information developed by A.D.A.M.公司. regarding tests and test results may not directly correspond with information provided by 加州大学旧金山分校健康. Please discuss with your doctor any questions or concerns you may have.