Labs

Question 1

Serum prealbumin

Answer 1

Aka transthyretin
20-40 mg/dL
10-15: mild protein depletion or inflm
5-10: mod protein depletion or inflm

Question 2

Serum total iron binding capacity (TIBC)

Answer 2

240-450 ug/dL

Question 3

Prothrombin time

Answer 3

20-15.5s

Prolongation: Vit K deficiency, anticoagulant ion, severe liver disease

Question 4

Serum Creatinine

Answer 4

0. 6-1.6 mg/dL

1. 6: renal failure, severe dehydration

Question 5

24-h urinary creatinine

Answer 5

500-1200 mg/d, standardized for height and sex

low: muscle wasting due to prolonged energy deficit, neuromuscular wasting

Question 6

24h urinary urea nitrogen (UUN)

Answer 6

15: severe catabolism

Protein balance = protein intake - protein loss
Protein loss = [24h UUN + 4] x 6.25

Question 7

Serum Albumin

Answer 7

3. 5-5.5 g/dL

2. 8-3.5: protein depletion or inflamm