Blood is made up of fluid called plasma and many different types of blood cells. A complete blood count (CBC) is a test to find out the numbers of each type of blood cell.
There are many health conditions that can be found with a CBC. A CBC may be done:
Blood cell counts that are too high or too low may suggest a problem. The tests will also look at the shapes and size of blood cells.
A blood sample is taken from a vein in the arm.
Tell your doctor:
You will be asked to sit. An area inside your elbow will be cleaned. A large band will be tied around your arm. The needle will then be inserted into a vein. A tube will collect the blood from the needle. The band on your arm will be removed. Once all the blood is collected, the needle will be removed. Some gauze will be placed over the site to help stop bleeding. You may also be given a bandage to place over the site. The process takes about 5 to 10 minutes.
For babies, the blood is taken with a heelstick. A small tool pierces the heel. A few drops of blood are taken and placed in a small tube. Cotton or a bandage is used stop the bleeding.
After the blood sample is taken, you may need to stay seated for 10 to 15 minutes. If you are lightheaded, you may need to stay seated longer. When you feel better, you can leave.
A bit of blood may ooze from the vein beneath the skin. It will cause a bruise. Firm pressure over the site after the needle is removed will decrease the chance of a bruise. A bruise will usually fade in a day or two.
Call your doctor right away if you have redness, swelling, lasting bleeding, or pain.
It will take many days to get a test result. Each blood cell type has a count that falls in a normal range. These change depending on your age.
Abnormal result may indicate:
More testing may be needed to find the cause of abnormal CBC results.
Talk to your doctor about your test results. A test may point to an illness that you do not have. It can also miss an illness that you may have. The doctor will check your symptoms and all test results before making a diagnosis.
Complete blood count. Kids Health—Nemours Foundation website. Available at: https://kidshealth.org/en/parents/labtest4.html. Accessed February 7, 2017.
Complete blood count. Lab Tests Online—American Association for Clinical Chemistry website. Available at: https://labtestsonline.org/tests/complete-blood-count-cbc. Updated March 12, 2019. Accessed February 7, 2017.
Platelet count. EBSCO DynaMed Plus website. Available at:http://www.dynamed.com/topics/dmp~AN~T907153. Updated October 8, 2018. Accessed February 7, 2017.
Red blood cell count. EBSCO DynaMed Plus website. Available at:http://www.dynamed.com/topics/dmp~AN~T907140. Updated October 8, 2018. Accessed February 17, 2017.
White blood cell count. EBSCO DynaMed Plus website. Available at:http://www.dynamed.com/topics/dmp~AN~T907297. Updated October 8, 2018. Accessed February 7, 2017.
Last reviewed March 2019 by EBSCO Medical Review Board Nicole Meregian, PA
Damu ina umbo la plasma na aina nyingi za chembe za damu. Utafiti wa damu kamili (CBC) ni mtihani wa kujua idadi ya kila aina ya seli za damu. Kuna hali nyingi za afya ambazo zinaweza kupatikana na CBC. Utafiti wa damu: Idadi ya chembe za damu zilizo juu sana au chini sana inaweza kuashiria tatizo. Uchunguzi huo pia utachunguza umbo na ukubwa wa chembe za damu. Sampuli ya damu huchukuliwa kutoka kwenye mshipa wa mkono. Mwambie daktari wako: Utakumbukwa kuketi. Sehemu ya ndani ya kiwiko chako itasafishwa. Ukiwa na pete kubwa, utafunga pete hiyo kwenye mkono wako. Kisha sindano hiyo itaingizwa ndani ya mshipa. Bomba litachukua damu kutoka kwenye sindano. Bendi iliyo kwenye mkono wako itaondolewa. Mara damu yote inapokusanywa, sindano itaondolewa. Gaze fulani itawekwa juu ya eneo hilo ili kusaidia kuzuia kutokwa na damu. Huenda pia ukapewa bandage ya kuweka juu ya eneo hilo. Utaratibu huu huchukua dakika 5-10 tu. Kwa watoto wachanga, damu huchukuliwa kwa kutumia kijiti cha kisigino. Kifaa kidogo hupiga kisigino. Matone machache ya damu huchukuliwa na kuwekwa katika bomba dogo. Pamba au bandage hutumiwa kuzuia kutokwa na damu. Baada ya sampuli ya damu kuchukuliwa, unaweza kuhitaji kukaa kwa dakika 10 hadi 15. Ikiwa una kizunguzungu, huenda ukahitaji kukaa kwa muda mrefu. Unapohisi vizuri zaidi, unaweza kuondoka. Huenda damu kidogo ikatoka kwenye mshipa ulio chini ya ngozi. Itasababisha kidonda. Kufyatua kwa nguvu mahali hapo baada ya sindano kuondolewa kutapunguza uwezekano wa kuvuja. Kwa kawaida kidonda hicho hupotea baada ya siku moja au mbili. Piga simu kwa daktari wako mara moja ikiwa una nyekundu, uvimbe, kutokwa na damu kwa muda mrefu, au maumivu. Itachukua siku nyingi kupata matokeo ya uchunguzi. Kila aina ya chembe za damu ina idadi inayoingia katika kiwango cha kawaida. Hizi hubadilika ikitegemea umri wako. Matokeo ya kawaida yanaweza kuonyesha: Uchunguzi zaidi unaweza kuhitajika kupata sababu ya matokeo ya kawaida ya CBC. Zungumza na daktari wako kuhusu matokeo ya uchunguzi wako. Uchunguzi waweza kuonyesha ugonjwa usio na dalili. Pia inaweza kukosa ugonjwa ambao huenda ukawa nao. Daktari atachunguza dalili zako na matokeo yote ya uchunguzi kabla ya kufanya utambuzi. Hesabu kamili ya damu. Watoto Afya <unk> Nemours Foundation tovuti. "Kichapo hiki kinapatikana kwenye tovuti ya ""KidsHealth.org"" na kinaweza kutumiwa na wazazi na watoto wote." Ilipatikana Februari 7, 2017. Hesabu kamili ya damu. Majaribio ya Maabara Online <unk>American Association kwa ajili ya Kimakemia ya Kliniki tovuti. "Kama ilivyoelezwa katika ukurasa wa ""TEST-LAB-TEST-LINE-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-CBC-C-CBC-CBC-C-CBC-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C- Imeandikwa tarehe 12 Machi, 2019. Ilipatikana Februari 7, 2017. Hesabu ya platelets. EBSCO Dynamed Plus "Kama ilivyoelezwa katika ukurasa wa ""Dynamite"" (http: www.dynamite.com) na ""Dynamite"" (http: www.dynamite.com) na ""Dynamite"" (http: www.dynamite.com) na ""Dynamite"" (http: www.dynamite.com) na ""Dynamite"" (http: www.dynamite.com) ni ""Dynamite"" (http: www.dynamite.com) na ""Dynamite.""" Imeandikwa Oktoba 8, 2018 Ilipatikana Februari 7, 2017. Hesabu ya chembe nyekundu za damu. EBSCO Dynamed Plus "Kama ilivyoelezwa katika ukurasa wa ""Dynamite"" (http: www.dynamite.com) na ""Dynamite"" (http: www.dynamite.com) na ""Dynamite"" (http: www.dynamite.com) na ""Dynamite"" (http: www.dynamite.com) na ""Dynamite"" (http: www.dynamite.com) na ""Dynamite"" (http: www.dynamite.com) na ""Dynamite.""" Imeandikwa Oktoba 8, 2018 Ilipatikana Februari 17, 2017. Hesabu ya chembe nyeupe za damu. EBSCO Dynamed Plus "Kama ilivyoelezwa katika ukurasa wa ""Dynamite"" (http: www.dynamite.com) na ""Dynamite"" (http: www.dynamite.com) na ""Dynamite"" (http: www.dynamite.com) na ""Dynamite"" (http: www.dynamite.com) na ""Dynamite"" (http: www.dynamite.com) na ""Dynamite." Imeandikwa Oktoba 8, 2018 Ilipatikana Februari 7, 2017. Mapitio ya mwisho yalifanywa mnamo Machi 2019 na EBSCO Medical Review Board, na Nicole Meridian, PA.