vitamin d,25 hydroxy
(Vit D)

Sample type: -

Serum.

Uses: -

Most accurate way to measure how much vitamin D is in your body.

Precautions: -

Usually, you will not need to fast. But this depends on the laboratory and the testing method used.

Interfere factors: -

• Patient over the age of 65.

• Are obese.

• Are taking certain medicines, such as phenytoin.

Pre-analytical errors: -

• In fasting cases and the patient comes not fasting.

• Hemolyzed specimen.

Corrective actions: -

• Proper storage of the sample.

• Proper instructions for the patient.

Post-analytical errors: -

• Mixing in patient’s results.

• Delay in delivery time of the results.

Corrective actions: -

• Correct identification of the sample and patient.

• Delivering results on time.

Reference range: -

20 and 40 ng/mL.