25-Hydroxy Vitamin D *
REQUESTING AND COLLECTING

Ordering:
Approved conditions for Medicare payment for 25-hydroxy Vitamin D

(one of the following required).

(a) has signs or symptoms of osteoporosis or osteomalacia

(b) has increased alkaline phosphatase and otherwise normal liver

function tests

(c) has hyperparathyroidism, hypo- or hypercalcaemia, or

hypophosphataemia

(d) is suffering from malabsorption (for example, because the patient

has cystic fibrosis, short bowel syndrome, inflammatory bowel disease

or untreated coeliac disease, or has had bariatric surgery)

(e) has deeply pigmented skin, or chronic and severe lack of sun

exposure for cultural, medical, occupational or residential reasons

(f) is taking medication known to decrease 25OH-D levels (for example,

anticonvulsants)

(g) has chronic renal failure or is a renal transplant recipient

(h) is less than 16 years of age and has signs or symptoms of rickets

(i) is an infant whose mother has established vitamin D deficiency

(j) is a exclusively breastfed baby and has at least one other risk factor

mentioned in a paragraph in this item

(k) has a sibling who is less than 16 years of age and has vitamin D

deficiency
Container(s):
Serum (gold-top) - Required

Heparin tube (5 mL lime-top) - NOT Acceptable

GENERAL INFORMATION

Test use:
Recommended first line test for vitamin D status. Note: Vitamin D assay

used at SydPath includes both Vitamin D2 and D3

Availability:
Test performed Daily (Mon to Sat)

Reference Intervals:
50 - 150 nmol/L (replete) 30 - 49 nmol/L (mild deficiency)

13 - 29 (moderate deficiency) <13 nmol/L (severe deficiency)

Laboratory:
Serology (8382-9173)

Patient Results:
(02) 8382-9100
Synonyms:
25 Hydroxycolecalciferol

25 OH Vit D

Vitamin D

Vitamin D2

Vitamin D3

Clinical Hyperlink:
Vitamin D - SydPath website
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INSTRUCTIONS FOR REFERRING LABORATORIES
Handling & Transport:
Centrifuge sample, store and transport serum at 4°C
National Prescribing Service Factsheet:
Vitamin D Tests (pdf)
___________________________________________________________________________________________________________________________________

INSTRUCTIONS FOR HANDLING AT SYDPATH
SydPath Handling:
SPRO: Place on MPA (serum tube first) Place in SPRO freezer.

Data Entry Code:
25D

SydPath Division:
Chemical Pathology

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Date/Time published: 30/03/2020 17:34:06
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