G

F

E

D

C

B

A

N

M

L

K

J

I

H

U

T

S

R

Q

P

O

Z

Y

X

W

V

Osmolality Serum

Osmotic Fragility test

Osteocalcin (Stool Exam)

Occult Blood

Opium.

Oxazepam

Osteopontin