Test Information

MEDLAB PATHOLOGY (IRELAND)

Special Instructions

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Code Instructions
1 Contact the laboratory for special tubes/containers/instructions.
2 Confirmation of not negative drug screens by GCMS may take up to 5 days
3 Clinical history essential and protect from light.
4 Send to the laboratory without delay.
5 Do not send sample to the laboratory between Friday noon and Monday morning.
6 Contact the Referrals Department before taking and sending sample to the laboratory.
7 Sample should be separated and frozen if sending overnight.
8 DRP Form required. DRP Form can be found at the back of the guide.
9 Clinical history must be provided.
10 Contact the laboratory for special stability tubes for lymphocyte subsets - or take an EDTA sample and ensure same day delivery to the laboratory, Monday to Friday noon (do not send sample between Friday noon and Monday morning).
11 Patient consent required. Consent Form can be found at the back of the Medlab Laboratory Guide.
12 Please provide one sample for each person being tested.
13 Protect from light
14 Provide details of travel history.
15 Ammonia
Sample: EDTA plasma only. Full tubes and tightly stoppered. On ice, centrifuged and analysed 20-30 mins post venepuncture (or plasma can be frozen). If haemolysed gives falsely high results. Patient: Fasting. Avoid smoking. 
16 Lactate
Sample: Fluoride oxalate plasma only. On ice and separate from cells 15-30 mins, analyse promptly. Handle with care as sweat contains large amounts of lactate. No tourniquet.
Patient: Rest 30 mins prior to test. 
17 Homocysteine
Should be spun and separated with 1 hour of venepuncture. 
18 Citrate Samples
Samples should be double spun and separated and frozen within 4-8 hours of sample taking, if a delay is expected with transportation to the laboratory, samples must be transported as frozen. 
19 Must include patient's age, height and weight.
20 Sample types: FCRU or PCR swab or TPV or Semen.
21 Urine cytology container, ideally first catch, mid-morning specimen.
22 Must be fresh.
23 for Fabry's Syndrome.
24 Anti-malarial drug.
25 Includes: potassium, magnesium, calcium, zinc, copper, selenium.
26 Tests for active metabolite 10-Hydroxycarbazepine.
27 Heredity Neuropathy.
 28  VDRL and VDRL/TPHA have now been replaced by Syphilis lgG/lgM.
29 Optional PAP Smear as additional test.
30 Collect sample at end of exposure.
31 At end of shift.
32 Avoid seafood and fish for 2-3 days before collection.
33 Sample must be labelled by hand with first name, family name and date of birth detailed on sample and form.
34 Sample must arrive in the laboratory on the same day of sample taking or contact the laboratory.
35 Patient should be fasting and resting for 30 mins before sample taking. Samples need handling urgently.
36 Renin: Sample collected either upright/active or resting/supine (3 hrs lying).
37 These samples should be taken on a Monday, Tuesday or Wednesday, and dispatched to the lab immediately
38 It is not possible to analyse samples that are greater than 48 hours old