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The page below is a sample from the LabCE course Dermal Puncture and Capillary Blood Collection. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Infants and Geriatric Patients: Monitor the Amount of Blood Obtained

The collection of a capillary blood specimen is often used on newborns and geriatric patients. These two groups are most susceptible to blood depletion. Therefore, a dermal puncture is preferred over venipuncture where too much blood may be inadvertently collected.

In some facilities, the amount of blood obtained from a patient will be charted or recorded after every procedure. This may become part of the patient's medical record and is usually entered by the nursing staff. In these cases, the nurse will interact with the laboratory staff to advise them of the safe amount of blood that can be obtained.