Procedure for Requesting Additional Blood Sciences (Biochemistry, Haematology and Immunology) Tests

Procedure for Requesting Additional Blood Sciences Tests

(Biochemistry, Haematology and Immunology)

We are aware that on occasion it is necessary to request additional tests for a sample already in the laboratory.

Method of requesting

Requests may be received via either ICE mail or by telephone. 
ICE mail add-ons are actioned 24hrs per day. For urgent requests contact the laboratory directly, for all other requests please use ICE mail.

Lab contact details

  • External call 0117 414 8383, select option 2
  • Internal call ext. 48383, select option 2
  • External call to Switchboard 0117 9505050
  • Biochemistry (Bleeps. 9436 or 9437) 
  • Haematology (Bleeps. 9433).

Biochemistry and Haematology Lab Routine Opening Hours

  • Weekdays, weekends and Bank Holidays 08:00 - 21:30

Out of hours

  • Weekdays, weekends and Bank Holidays 21:30 - 08:00

Immunology laboratory

  • Weekdays 08:00 - 16:00

We will accommodate additional requests where possible, provided that:

  • The appropriate specimen type with sufficient sample remaining is available for the requested test.
  • The test does not require special specimen handling.

To request an additional test, please provide following information

  • Sample Number (available on ICE, instructions here-  

  • Name of patient
  • Tests to be added
  • Name and phone number of requester

If the add-on test is urgent, ensure this is communicated to the lab when requesting the add-on.

Guidelines for Additional Requests

Unstable! – add-ons are  NOT appropriateWithin 24 hours of venepunctureWithin 48 hours of venepunctureUp to three days after
AmmoniaHaematology tests –FBC and RET.Haematology tests –  PV, GF and G6PD.U&E, LFTs
BicarbonateCoagulation - DIM, INR, CSC.Vitamin B12Bone, Mg
Lactate (unless fluoride tube)CSF LactateFolateTFTs
Anti-Mullerian HormoneTroponin IDigoxinBNP
MesothelinMalaria Parasites (include travel details)PTH (EDTA Tube)Cortisol, hCG, LDH, Lipids, 
Oestradiol, Paracetamol
Phenytoin, SHBG
CH50/AP50Requests for Film Reviews (FR) - these will be vetted by Haematology. Non-antenatal Haemoglobinopathy Screens
C1 Esterase InhibtorConjugated/Direct Bilirubin HbA1c
Any Chemistry test that needs to be referred frozen   

Please note that requesting an additional test is not appropriate for Antimicrobial or Microbiology assays.

Procedure for Requesting Additional Blood Sciences (Biochemistry, Haematology and Immunology) Tests