normal platelet count: between 150,000–450,000 platelets per microliter of circulating blood; low platelet count: anything under 150,000 platelets per microliter of circulating blood is considered low (if the platelet count falls below 20,000 per microliter, spontaneous bleeding may occur and is considered life-threatening) or 150–450 × 10 9 per liter. Then the following formula is applied (this is a rough guide): Platelets dispersed in the monolayer of a canine blood film. What is the normal count of platelets in the blood? This rate is found in 95% of healthy women. In fact, even if you have a normal platelet count, abnormal indices may alert your doctor to a problem. The normal count of platelets in the blood is age-dependent: Adults: 150 - 400 x 10 3 /µl (microliter) Children: 150 - 400 x 10 3 /µl (microliter) Infant: 200 - 400 x 10 3 /µl (microliter) Babies up to 1 month: 200 - 450 x 10 3 /µl (microliter) Newborns: 100 - 470 x 10 3 /µl (microliter). Normal Ranges Platelets: 150,000 to 450,000 per milliliter View Large. To see why your platelets are high, doctors may do other blood tests, including special genetic tests. The normal range (99% of population analyzed) for platelets in healthy Caucasians is 150,000 to 450,000 per cubic millimeter (a mm 3 equals a microliter). The normal number of platelets in the blood is 150,000 to 400,000 platelets per microliter (mcL) or 150 to 400 × 10 9 /L. A hemocytometer is used to measure the platelet concentration. When the number of platelets is low, this concentration reduces. The first platelet counts obtained in the first 3 days of life, increased over the range of 22 to 42 weeks gestation. A platelet count below 10,000 is considered severe thrombocytopenia. Estimated platelet count/µL = average count in 10 fields x 15,000. They also may need to take a small sample (biopsy) of your bone marrow and examine it under a microscope. Why normal levels can differ across different labs? Abnormal platelet count due to the intake of certain medications is possible. The platelet count can also be determined by using an automated platelet analyzer like electrical impedance or Coulter counter. For example, if an average field contains 7 platelets, an estimate of 105,000/µL would be appropriate. Some causes of an increased platelet count include myeloproliferative disease ( essential thrombocytosis, chronic myelogenous leukemia, polycythemia vera, myelofibrosis ) and reactive thrombocytosis (postpartum ,hemorrhage, iron deficiency, inflammation, decreased or … The normal range has been confirmed to be the same in the elderly and Spanish populations. A normal platelet count ranges from 150,000 to 400,000 per microliter of blood. A drop below normal platelets range can lead to abnormal bleeding. Platelets are measured as part of a standard test called a complete blood count (CBC). A count lower than 150,000 is considered thrombocytopenia and may affect your ability to donate platelets, among other things. Generally, the normal range of platelet count 150,000 to 450,000 per cubic millimeter. A normal platelet count is around 140,000 to 450,000 platelets per microliter (μl) of blood. Talk to your doctor about your test results. According to Biino et al, 9 low platelet count was defined as platelet number <156 × 10 9 /L or <140 × 10 9 /L for women ≤64 and >64 years of age, respectively; for men, low platelet count was defined as platelet number <141 × 10 9 /L or <122 × 10 9 … This suggest that being knowledgeable of all the medications you are taking is important. The normal platelet count range is between 150,000 and 450,000 platelets per microliter of blood. In those born < or =32 weeks gestation, the lower reference range (5th percentile) was 104,200 microl (-1), but it was 123,100 microl (-1) in late-preterm and -term neonates. Some lab use different measurements or may test different specimens. Normal value ranges may vary slightly.

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