Chemical pathology

Question 1

What are LFTs

Answer 1

Liver function test

Question 2

What are U and Es

Answer 2

Urea and electrolytes

Question 3

What does colour of top of tube indicate

Answer 3

Anticoagulants

Question 4

Anticoagulants in red top

Answer 4

None

Question 5

Anticoagulants in yellow top

Answer 5

Gel to speed up clot

Question 6

Anticoagulants in purple top

Answer 6

Potassium EDTA

Question 7

Anticoagulants in grey top

Answer 7

Fluoride oxalate

Question 8

What colour top does UandEs go in

Answer 8

Serum in yellow/red

Question 9

What colour top does glucose go in

Answer 9

Plasma in grey

Question 10

What colour top does HBA1C go in

Answer 10

Plasma in purple

Question 11

What colour top does TFT go in

Answer 11

Serum yellow and red

Question 12

What colour top does LFT go in

Answer 12

Yellow or red

Question 13

Why is fluoride oxalate added to measuring glucose sample

Answer 13

Prevents RBCs from using up glucose

Question 14

What is first thing done to a blood sample when reaches lab

Answer 14

RBC separated by centrifugation

Question 15

When do you contact a chem path lab by phone

Answer 15

Need sample rapidly centrifuged out of hours
Need CSF glucose and protein urgently
Measure labile hormones like insulin

Question 16

Signs of renal failure

Answer 16

Raised urea and creatinine

Question 17

Liver function tests

Answer 17

Albumin
Bilirubin
Alkaline phosphate
ALT
AST

Question 18

Purpose of cardiac enzymes

Answer 18

Normally present in heart muscle but if heart attack then leak into blood

Question 19

Cardiac enzymes measured

Answer 19

Troponins
Creatine Kinase
Asparte Amino Transferease
Lactate Dehydrogenase