Introduction

Question 1

Collection tube for trace metal

Answer 1

special clotted blood tube

Question 2

Collection tube for clotting profile

Answer 2

potassium citrate (blue)

Question 3

Collection tube for drugs, tumour markers, and most hormones

Answer 3

Serum clot activator (red)

Question 4

Collection tube for CBC, HbA1c

Answer 4

EDTA (purple)

Question 5

Collection tube for plasma glucose and lactate

Answer 5

Fluoride (grey)

Question 6

order of blood collection

Answer 6

藍紅綠紫灰

Question 7

Syringe for ABG & ionised calcium

Answer 7

heparinised syringe

Question 8

EDTA contamination

Answer 8

↑ K,
↓ Ca, ↓ Mg, ↓ ALP

Question 9

Reference level with non-Gaussian distribution (2)

Answer 9

bilirubin, CK

Question 10

“Significant change level” equation

Answer 10

= 2.77 (SD1^2 + SD2^2)^(1/2)
SD1 = analytical variation
SD2 = biological variation

Question 11

Likelihood ratios equation

Answer 11

LR+ = TP/FP
LR- = FN/TN

Question 12

Laboratory tests for miscellaneous fluid (6)

Answer 12

Appearance, Biochemistry, Cell count & differentials, Microbiology, Cytology

Question 13

Collection procedure of lumbar puncture

Answer 13

1~3ml discarded
1~3ml biochemical analysis
1~3ml microbiological anlaysis

Question 14

Use of CSF asialo-transferrin & procalcitonin

Answer 14

asialo-transferrin: differentiate CSF rhinorrhoea from nasal secretion
procalcitonin: differentiate bacterial & viral meningitis

Question 15

Test for TB in pleural fluid

Answer 15

ADA (adenosine deaminase)

Question 16

What is blue, red, purple collection tube testing for respectively?

Answer 16

clotting profile
drugs, tumour markers, most hormones, protein
CBC, HbA1c