Trace Elements

Question 1

Storage form of Iron in the Body (2)

Answer 1

Ferritin (Blood) and Hemosiderin (Liver)

Question 2

What form of Iron is Absorbed in the Intestines?

Answer 2

Ferrous (Fe2+)

Question 3

What causes deficiency of Essential Trace Elements? (4)

Answer 3

1. Decreased Intake
2. Impaired Absorption
3. Increased Secretion
4. Genetic

Question 4

Why are Non-essential Elements of Medical Interests?

Answer 4

Because most of these elements are toxic

Question 5

What is the Difference in reporting Trace Elements and Ultra-trace Elements?

Answer 5

Reporting Units
Trace: mg/L
Ultra Trace: ug/L

Question 6

If urine should be collected for Trace Elements, what method of collection, what collection bottle and additive should be used?

Answer 6

1. 24 Hour collection
2. Polyethylene Bottles
3. Glacial Acetic Acid

Question 7

What regulates iron absorption in the upper gastrointestinal tract?

Answer 7

HEPCIDIN

Question 8

What does Hepcidin modulate/ inhibit during increased iron export?

Answer 8

Ferroportin