Chapter 13- Additional Tests Commonly Ordered

Everyone who has come into contact with a sample must be documented.

What is chain of custody?

Write down N/A

What should you do if there is nothing to record on chain of custody form?

Barcode

How are forensic specimens tracked?

You could be called into court or asked for a written statement

What could happen if you collect a forensic sample?

1 hour, 2 hours, 3 hours, or 5 hours

What are the different time windows for OGTT?

50, 75, 100, and 150g

What sizes does glucola come in?

Initial blood draw

What is the first step of OGTT?

Drink administered within 5 minutes

What is the second step of OGTT?

The blood draws are then taken hourly throughout the ordered test

What is the third step of OGTT?

Levels that depend on the time of day

What does diurnal variation mean?

Within the first 72 hours of life

When is a PKU test ordered for infants?

Phenylketonuria, a genetic disease

What does a PKU screening test for?

Heelstick in an infant’s foot or urine

How is a PKU screening done?

Oxygen, carbon dioxide, and blood pH

What does ABG measure?

Heparin

What tubes are used for ABG?

No

Do you, as a phlebotomist, draw for an ABG?

Radial artery

Where is the specimen for an ABG usually obtained?

15 minutes

How soon after collection does the sample need to be run?

90

What angle does a provider use to obtain ABG?

Blood bicarbonate

What is also tested in ABG along with blood pH, O2, and CO2?

3-5 minutes

How long do you apply pressure after an ABG?

No

Should any other duties be completed between collection (or assistance of) and testing of an ABG?