Container: EDTA (Lavender top)

Sample type: Whole Blood

Test name: Porphyrins

Condition / Indication: Porphyria (Acute or Cutaneous)

Special precautions & notes: Please discuss request with laboratory. Once collected, protect sample from light at all times (wrap in foil, place in thick brown envelope), and send immediately.

Reference range: Plasma total porphyrin: <11.2 nmol/L. Erythrocyte total protoporphyrin <1.7 umol/L.

Container: EDTA (Lavender top)

Ideal volume (mL): 5-10 mL

Referred outside NBT for analysis? Yes

Discipline: Clinical Biochemistry

Turnaround time: 15 days


Referral location: Porphyria Service, Medical Biochemistry (Upper Ground floor), University Hospital of Wales, Heath Park, Cardiff, CF14 4XW