B12 & Folate

Pathology category

Biochemistry

Code

BF

Referral code

Request form

Test information

Assessment of haemopoetic function.

Guidelines

Pre-analytical

Haemolysis unsuitable for Folate. Analysis cannot be added on to samples >24h old

Reference range

Folate: 3.1 – 19.9 ug/L

B12: 133 – 675 pmol/L

Source: Beckman Coulter

Tube type

Tube type info

Adults: 5ml Serum SST (gold top)

Paediatrics: 0.5ml paediatric plain

Special requirements

Minimum volume

Adults: 0.5 ml

Paediatrics: 0.3 ml

Assay frequency

Run daily at local laboratory

TAT Inpatient (urgent)

TAT Inpatient

24 hrs

TAT GP/Outpatient

48 hrs

Referral lab

Local, Clinical Biochemistry