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Anion Gap (Included in Blood Gas)

Phlebotomy Requirements

Can only be collected by trained personnel. Send to laboratory immediately. 1.0ml of arterial blood into heparinised syringe or capillary with no air bubbles.



Sample container

PICO syringes


*If Urgent Colchester Request*: Colchester. If Routine Colchester or Ipswich Request: Ipswich.


Non-fasting. No specific patient preparation required.

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Bank Holiday Consumables Ordering

Please ensure you order your Pathology Consumables before Thursday 15.00hrs for any of the bank holidays, to receive orders before the Monday closures. All orders after this date and time will not be guaranteed delivery until the following Tuesday   Kind Regards Pathology Customer Service Desk and ERS Medical.    

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Sample and request form labelling

Blood Sciences and Microbiology Standards for labelling

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New Blood Sciences Combined Form For Colchester

From Monday 16th May 2022 the current separate blood sciences request forms will be replaced by a combined form.   The current form will still be accepted until stock runs out. For any questions please contact

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Microbiology Sample Collection Update

From 1st September Hologic Aptima collection tubes for Chlamydia and Gonorrhoea no longer accepted. Replaced by Roche 6800 sample collection containers available to order from consumables store. Please follow the link for all details.

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