Vitamin A (retinol) (HPLC) (s) (Serum, frozen (s))

Testcode:	E_VITA
Specimens:	500 µl Serum, frozen (s)
Preanalytics/Notes:	Send samples protected from light (e. g. wrapped with foil). Serum stable for 24h, otherwise freeze the sample. Due to its low stability we will not perform analyses on full blood and plasma samples. Please send serum only.
Method:	HPLC
Dimension:	mg/l
Set-up:	Mon Tue Wed Thu Fri Sat Sun
Duration:	3 days
Indication/Significance:	Malabsorption syndrome Night blindness: Impaired twilight vision, increased sensitivity to blinding Suspected overdose of parenteral substitution
Interpretation:	Decreased in the case more… Decreased in the case of: Malabsorption syndromes: Sprue, coeliac disease, short-gut syndrome, enteritis, Crohn's disease, lambliasis Maldigestion syndromes: Chronic cholestatic liver and bile duct diseases (bile acid deficiency), exocrine pancreatic insufficiency Decreased storage/transport of vitamin A: Liver cirrhosis, premature infants, RBP deficiency, nephrotic syndrome Increased in the case of: Excessive intake due to self-medication Vitamin A therapy, e.g. in the case of acne and psoriasis close