We sought to develop reference ranges for hematocrit and hemoglobin during the neonatal period (28 days) by using very large sample sizes and modern hematology analyzers, accounting for gestational and postnatal age and gender. Reference ranges for the hematocrit and the blood hemoglobin concentration of newborn infants have previously been reported from relatively small sample sizes by using measurement methods that now are considered outmoded. “Reference ranges” are developed when it is impossible or inappropriate to establish “normal ranges” by drawing blood on healthy normal volunteers. Clinical trialsĮxplore Mayo Clinic studies of tests and procedures to help prevent, detect, treat or manage conditions.OBJECTIVE.
If your hemoglobin level is below or above normal, your doctor may want to evaluate the hemoglobin test results along with those of other tests, or additional tests may be necessary, to determine next steps.įor specifics about what your hemoglobin test results mean, talk to your doctor. If you've been previously diagnosed with polycythemia vera, an elevated hemoglobin level may indicate a need to alter your treatment plan.
For women, 11.6 to 15 grams per deciliter.For men, 13.2 to 16.6 grams per deciliter.You can return to your usual activities immediately after the sample is taken. The blood sample is sent to a lab for analysis. For infants, the sample may be obtained by pricking the heel. What you can expectįor a hemoglobin test, a member of your health care team takes a sample of blood by pricking your fingertip or inserting a needle into a vein in your arm. Your doctor will give you specific instructions. If your blood sample will be used for other tests, you may need to fast for a certain amount of time before the sample is taken. If your blood sample is being tested only for hemoglobin, you can eat and drink normally before the test. Request an Appointment at Mayo Clinic How you prepare
0 kommentar(er)
