Up to 6 hours old  the following tests can be added:	Up to 24 hours old  the following tests can be added:	Up to 48 hours old the following tests can be added:	Up to 5 days the following tests can be added:
Sodium	Trop T	Urea & Creatinine	Lipids
Potassium	Glucose	Liver profile (excluding Bilirubin)	TFTs
Bicarbonate	Insulin & c-peptide	Bone Profile	LH/FSH/Prolactin
Chloride		Digoxin	Cortisol
CKMB		Oestrogen	Testosterone
		DHEAS	Progesterone
		Amylase	Tumour Markers
		Magnesium	HbA1C
		Urate	FK506/Cyclosporin/Sirolimus
		PTH

Any tests that exceed the stated allowed time or are not included in the table must be discussed with the Duty Biochemist on ext 4236

It is departmental policy not to accept/perform add-on requests since the integrity of the sample cannot be guaranteed and a repeat specimen with another request form should be sent. However, exceptions to this policy can be made for precious samples or where the patient cannot be re-bled.

Back to Clinical Biochemistry index