PTH fuckery

Question 1

Low ca2+, low PO4-, high ALP, high PTH,
Low 25-OH vitamin D suggests what?

Answer 1

Vitamin D deficiency
Nutritional

Question 2

Low ca2+, low PO4-, high ALP, high PTH,
Normal 25-OH vitamin D, low 1,25 dihydroxycholecalciferol suggests what?

Answer 2

Vitamin D dependent rickets type 1
1a hydroxylase deficiency

Question 3

Low ca2+, low PO4-, high ALP, high PTH,
Normal 25-OH vitamin D, high 1,25 dihydroxycholecalciferol suggests what?

Answer 3

Vitamin D dependent tickets type II
hereditary resistance to vit D

Question 4

Normal ca2+, low PO4-, high ALP, high l/normal PTH, Normal 25-OH vitamin D suggests what?

Answer 4

X-linked hypophosphataemic rickets

Question 5

Low ca2+, low PO4-, high ALP, high PTH,
Normal 25-OH vitamin D suggests what?

Answer 5

Primary hyperparathyroidism

Question 6

Low ca2+, high PO4-, high ALP, high PTH,
Low 25-OH vitamin D, low 1,25 dihydroxycholecalciferol suggests what?

Answer 6

Renal failure
( secondary hyperparathyroidism)

Question 7

Low ca2+, high PO4-, normal ALP, high PTH, Normal 25-OH vitamin D suggests what?

Answer 7

Pseudohypoparathyroidism