NHA Worksheet 5/6

This refers to a measure of precision or how well an instrument is
functioning?

Quality control

f there has been a series of out of range blood glucose readings what steps should the phlebotomist take?

perform external controls

What could be the reason a centrifuge would make unusual noise during the processing of specimens?

unbalanced tubes

What is another name for capillary punctures?

dermal puncture or finger sticks

Common capillary point-of-care (POC) tests are?

glucose, cholesterol,…

Capillary blood collection is preferred for infants younger than

one year old

What 3 types of blood does a dermal puncture
contain?

arterial, capillary, venous

Which fingers on adults are used for capillary blood
collection?

middle and ring finger on the non dominant hand

In infants up to 1 year old capillary collections should be done

in the heel

During a dermal puncture why should the first drop of blood be wiped away?

helps to remove any alcohol or tissue fluid from the blood sample.

A __ is a thin film of blood spread onto a microscopic glass slide?

blood smear

When preparing a blood smear where should the drop of blood be placed on the glass microscope slide?

½ inch to one inch from end of the slide

At what angle do you spread the drop of blood with the spreader
slide?

30-35 degree angle

Blood spot testing for newborn screenings are performed before the newborn is

72 hours old

Newborn screenings aid in the early detection diagnosis and treatment of

cystic fibrosis, galactosemia, infections, diseases, hyperthyroidism, PKU

Define galactosemia.

lack of an enzyme that breaks down galactose into glucose.

This condition in infants can cause a deficiency in hepatic enzyme phenylalanine hydroxylase

PKU

A heel puncture on an infant should be ___ with a semi-automated lancet device no deeper than __?

lateral, 2mm

A newborn screening card must be allowed to air dry for

3 hours

The circles on a newborn screening card must be

completely filled with blood and totally saturated, but not overly saturated

Why type of blood does a dermal puncture contain?

capillary

The PKU test is used to detect____?

inborn errors

Which of the following equipment is not used in micro sampling?

25-inch butterfly needle

on what part of infant’s foot should blood be taken from

medial and lateral side of foot

Additive for the light blue blood culture bottle?

sodium cytrate