Misc Notes (9 May 2017)

Question 1

What does Preg U test for specifically?

Answer 1

The presence of human chorionic gonadotropin = pregnancy

Question 2

Differentiate between “clean catch” and “mid-stream” urine. (2)

Answer 2

1. Clean catch → clean genitals with towelette and pee into urine bottle
2. Mid-stream → pee into the toilet, then the bottle, then the toilet to finish

Question 3

What are the 2 substances that the grey tubes often contain? (2)

Answer 3

1. Sodium fluoride

2. Potassium oxalate

Question 4

On what tube are glucose tests usually taken on? What tube is it taken on if the preferable one is unavailable?

Answer 4

1. Red

2. Grey

Question 5

Differentiate between how EDTA, sodium citrate, oxalate, and heparin prevent clotting. (2)

Answer 5

1. Heparin inhibits thrombin (a clotting factor)

2. EDTA, sodium citrate, and oxalate remove calcium by binding and forming insoluble calcium salts

Question 6

When are Preg U tests best taken and why? (2)

Answer 6

1. In the morning

2. Most concentrated