Vitamin B1

Containers - Adult

Orange Cap	Volume Range 2.0 mL Additive per Container Lithium-heparin (non gel)
Red/Pink Cap	Volume Range ​2.0 ml Additive per Container Potassium EDTA

Containers - Child

Orange Cap - Paediatric	Volume Range 2.00 ml Additive per Container Lithium-heparin

Reference ranges

​275-675 ng/g Hb

150-275 ng/g Hb (subclinical deficiency)

<150 ng/g Hb (clinically deficient)

Laboratory Site

Glasgow Royal Infirmary

84 Castle Street
Glasgow
G4 0SF

Telephone: 0141 211 4000

Special instructions for collection

Fasting sample or 8 hours after supplementation is recommended.

Anticipated turnaround

​28 days

General additional information

Also known as thiamine diphosphate.

Samples sent to Scottish Trace Element and Micronutrient Reference Laboratory.