Pre-analytical source of errors PDF Print E-mail
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Written by Ramaz Mitaishvili   
Saturday, 05 May 2007
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Pre-analytical source of errors
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The medical personnel will identify an outpatient by asking them to state and spell their full name and state their birth date (year, month and day), as well as by obtaining the patient’s provincial health card or hospital card upon each visit.
Pediatric patients may be identified by their parent/guardian.
If a patient does not have a provincial health card or hospital card, the medical personnel will obtain another form of I.D. such as a driver’s license or credit card.  The patient may be required to contact Data Maintenance with their personal health number.
Determination of name and DOB (Be sure to properly identify the patient asking patient to spell name.
a) Does the name spelled by the patient match requisition?
b) Does the name on the patient’s chart match the name on the patient’s identification?
c) If more than one patient is present with the same first and last name, how do you determine which one is the test patient? (Look for possible gender differences, social security number, patient identification number, birthdates, different middle name, and relevance of the test to the patient’s history).

Labeling Process
All collection tubes and request forms must be labeled clearly with the patient's ID sticker. When this is not available, their NHI number or temporary hospital number, surname and date of birth must be written on the tube(s). The request form must state clearly which tests are required and include the same patient information as the sample collection tubes. The request form should also include the date and time of sample collection as well as a clear indication of the requesting doctor and location of the patient.
Specimen Labels and Blood Collection Lists
1. Specimen identification is essential.
a. Must be clear an accurate.
b. Begins immediately upon collection and continues through disposal.
c. Methods for labeling will vary.
2. Computer versus manual labeling.
a. Most sophisticated, accurate and efficient method is computer labels.
b. Orders put in at any time for a morning run, collection lists are generated prior to
morning run.
c. Labels generated by the computer are put on specimens, phlebotomist adds date,
time and initials.
d. Extra labels are used in lab for labeling tubes, cuvettes, and slides.
e. Barcodes add to organization and accuracy of specimen testing.
f. Manual methods are time consuming and prone to transcription errors.
Last Updated ( Thursday, 21 June 2007 )
 
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