S tests

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Salicylate

  • Test Name: Salicylate
  • Laboratory: Biochemistry
  • Specimen Type: Serum, plasma
  • Specimen Container: Yellow, green for WRH in house samples only.
  • Specimen Volume: 4mls
  • Specimen Requirements: N/A
  • Other details: N/A
  • Frequency of analysis/ assay: daily
  • Turnaround Time: Routine - 1 working day Urgent < 3 hours
  • Phone alert limits:
  • Preanalytical stability at room temp:

Selenium

  • Test Name: Selenium
  • Laboratory: Biochemistry Referred Test
  • Specimen Type: Serum
  • Specimen Container: Navy top
  • Specimen Volume: 4mls
  • Specimen Requirements: N/A
  • Other details: Send separate request form with sample.
  • Frequency of analysis/ assay:
  • Turnaround Time: 3 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: N/A

Semen Analysis - Infertility Investigations

Semen analysis is currently provided by Waterstone Clinic.  Clinicians can access this service for patients by completing the relevant Semen Analysis Referral Form.  

Semen Analysis Referral Forms for Hospital consultants are available from Pathology Dept. (Phone: 051-842495). 

Semen Analysis Referral Forms for GPs are available from Cruinn Diagnostics Ltd. View the Laboratory Supplies page for further information and order requisition forms

Septicaemia see Blood Culture

Serotonin (5 hydroxy tryptamine)

  • Test Name: Serotonin (5 hydroxy tryptamine)
  • Laboratory: Biochemistry Referred Test
  • Specimen Type: 2 X 2ml lithium heparin whole blood samples. Do Not Use Gel
  • Specimen Container: Green
  • Specimen Volume: 4mls
  • Specimen Requirements: Send sample to lab within 1 hour of collection.

    - DIET: in the 48 hours preceding the sample, avoid foods or drinks rich in tryptophan (essential amino acid constituting serotonin): oily fish, poultry livers, brown rice, dairy products, bananas, chocolate / cocoa, dried fruits (nuts, almond, cashew nuts, dates), mango, avocado, tomato, plum, kiwi, pineapple, shellfish, beans and legumes, pumpkin seed

    -Note that taking antidepressants such as IRRS (serotonin reuptake inhibitors) may decrease the basal level of serotonin.

  • Frequency of analysis/ assay:
  • Turnaround Time: 3 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: N/A

Sex Hormone Binding Globulin (SHBG)

  • Test Name: Sex Hormone Binding Globulin (SHBG)
  • Laboratory: Biochemistry Referred Test - Send separate request form and sample for referral.
  • Specimen Type: Serum, lithium heparing plasma
  • Specimen Container: Yellow, green
  • Specimen Volume: 4mls
  • Specimen Requirements: N/A
  • Other details: Send separate request form and sample.
  • Frequency of analysis/ assay:
  • Turnaround Time: 3 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: N/A

Sexually Transmitted Infection (STI) see Genital tract and associated infections

Sirolimus Assay

  • Test Name: Sirolimus Assay
  • Laboratory: Haematology referral test
  • Specimen Type: EDTA
  • Specimen Container: Purple
  • Specimen Volume: 2.5 ml
  • Specimen Requirements: Do not send Fridays
  • Other details: N/A
  • Frequency of analysis/ assay: Referred to external test site
  • Turnaround Time: 2 - 4 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: 3 days

Sodium - Blood

  • Test Name: Sodium - Blood
  • Laboratory: Biochemistry
  • Specimen Type: Serum, plasma
  • Specimen Container: Yellow, green for WRH in house samples only.
  • Specimen Volume: 4mls
  • Specimen Requirements: Unspun overnight samples are unsuitable.
  • Other details: N/A
  • Frequency of analysis/ assay: Daily
  • Turnaround Time: Routine - 2 working day Urgent <3 hours
  • Phone alert limits: <120 mmol/L >160 mmol/L
  • Preanalytical stability at room temp:

Sodium - Urine

  • Test Name: Sodium - Urine
  • Laboratory: Biochemistry
  • Specimen Type: Random urine or 24 hour urine
  • Specimen Container: Sarstedt Urine Z bottle (yellow cap) or 24 hour urine container.
  • Specimen Volume: 3.2 mls or complete collection
  • Specimen Requirements: Urine collection bottle and request form must be clearly labelled with patient details. The date and time of start of collection should be clearly stated
  • Other details: Boric acid container (red top) is unsuitable.
  • Frequency of analysis/ assay: daily
  • Turnaround Time: 2 working days
  • Phone alert limits: N/A
  • Preanalytical stability at room temp:

Somatostatin

  • Test Name: Somatostatin
  • Laboratory: Biochemistry Referred Test
  • Specimen Type: EDTA +aprotinin
  • Specimen Container: Pink (available from the biochemistry lab)
  • Specimen Volume: 4 mls
  • Specimen Requirements: Send sample to lab within 30 mins after collection.
  • Other details:
  • Frequency of analysis/ assay:
  • Turnaround Time: 3 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: Sample must be separated and frozen in lab < 1 hour.

Steroid Profile

  • Test Name: Steroid Profile
  • Laboratory: Biochemistry Referred Test
  • Specimen Type: 24 hour urine
  • Specimen Container: 24 hour urine container available from the biochemistry dept.
  • Specimen Volume: Complete collection
  • Specimen Requirements: Send sample to lab within 1 hour after collection is completed.
  • Other details: Specific requests forms provided by Kings College School of Medicine should accompany the sample. Urine collection bottle and request form must be clearly labelled with patient details. The date and time of start and finish of collection must be clearly indicated.
  • Frequency of analysis/ assay:
  • Turnaround Time: 4-5 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: Sample must be frozen in the lab < 1 hour.

Stone Analysis

  • Test Name: Stone Analysis
  • Laboratory: Biochemistry Referred Test
  • Specimen Type: Stone
  • Specimen Container: Sterile universal container (white top)
  • Specimen Volume: N/A
  • Specimen Requirements: N/A
  • Other details: N/A
  • Frequency of analysis/ assay:
  • Turnaround Time: 3 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp:

Sub-arachnoid haemorrhage

  • Test Name: Sub-arachnoid haemorrhage
  • Laboratory: Microbiology
  • Specimen Type: Cerebro Spinal Fluid (CSF)
  • Specimen Container: Sterile universal container.
  • Specimen Volume: At least 1ml
  • Specimen Requirements: CSF collected sequentially into three separate
  • containers labelled 1,2, and 3. All specimens should be
  • Other details:
  • Frequency of analysis/ assay:
  • Turnaround Time: Microscopy within 2 hours of receipt of specimen.
  • Phone alert limits:
  • Preanalytical stability at room temp:

Sweat Test

  • Test Name: Sweat Test
  • Laboratory: Biochemistry
  • Specimen Type: Sweat
  • Specimen Container: Sterile universal container (white top)
  • Specimen Volume: min 6-10 ul
  • Specimen Requirements: Give lab notice when sweat test is due to arrive.
  • Other details: N/A
  • Frequency of analysis/ assay: As required
  • Turnaround Time: < 2 hours
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: N/A

Syphilis serology

  • Test Name: Syphilis serology
  • Laboratory: Serology
  • Specimen Type: Clotted Blood Specimen
  • Specimen Container: Yellow, white (paediatric).
  • Specimen Volume: 4ml clotted blood (1.5ml paediatric).
  • Specimen Requirements: Refrigerate if delivery to the laboratory is delayed
  • Other details: N/A
  • Frequency of analysis/ assay: Daily
  • Turnaround Time: 1-2 days, confirmatory positive syphilis- 14 days
  • Phone alert limits: Positive Syphilis specimens will be phoned to the requesting clinician
  • Preanalytical stability at room temp: N/A