F Tests

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Fabrys Disease

 

  • Test Name: Fabrys Disease
  • Laboratory: Misc External Referral
  • Specimen Type: Contact Laboratory (ext 2495) to arrange collection of test kit
  • Specimen Container:
  • Specimen Volume: 5ml
  • Specimen Requirements:
  • Other details: Dr.Guy Besley/Mrs Margaret ThornleyWillink
  • Biochemical Genetics Unit, Royal Manchester
  • Children's Hospital, Pendlebury, Manchester, M27 4HA
  • Frequency of analysis/ assay:
  • Turnaround Time:
  • Phone alert limits:
  • Preanalytical stability at room temp:

 

Factor V Leiden Mutation

  • Test Name: Factor V Leiden Mutation
  • Laboratory: Haematology referral test
  • Specimen Type: EDTA
  • Specimen Container: Purple
  • Specimen Volume: 2.5 ml
  • Specimen Requirements: Do not send Fridays
  • Other details: A signed patient consent form must accompany the sample and request form. A copy of the consent form can be obtained from the Haematology section of the UHW Lab User manual website or from UHW Q-Pulse. Testing will not be performed unless a completed consent form is received.
  • Frequency of analysis/ assay: As required. Test should not need to be repeated.
  • Turnaround Time: 2 -4 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: 2 days

 

Faecal Elastase

 

  • Test Name: Faecal Elastase
  • Laboratory: Biochemistry Referred Test
  • Specimen Type: Faecal Sample
  • Specimen Container: Universal container (Blue top/white top)
  • Specimen Volume: 20 g
  • Specimen Requirements:
  • Available only by special request.
  • Other details: Loose wet stools give unreliable results and are only measured qualitatively. Repeat when a more formed stool is available.
  • Frequency of analysis/ assay:
  • Turnaround Time: 3 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: N/A

 

Faecal Occult Blood

 

  • Test Name: Faecal Occult Blood
  • Laboratory: Microbiology
  • Specimen Type: Faceal sample on a hemoplus slide or faecal sample
  • Specimen Container: Slides x 3 on three consecutive days or sterile universal container with/without a spoon.
  • Specimen Volume: 10g pellet
  • Specimen Requirements: N/A
  • Other details: The patient should be informed to eat fibre rich foods for three days prior to commencing the test as well as during the test period. Vitamin C supplements, black pudding, raw meats should be avoided. The test should be postponed in the event of diarrhoea or menstruation.
  • Frequency of analysis/ assay: Daily
  • Turnaround Time: 2 working days
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: N/A

 

Faeces for Viral culture

  • Test Name: Faeces for Viral culture.
  • Laboratory: Serology External
  • Specimen Type: Faeces
  • Specimen Container: Sterile universal container with/without a spoon.
  • Specimen Volume: 1-2g (spoonful).
  • Specimen Requirements: Refrigerate if a delay in delivery to the laboratory
  • Other details: N/A
  • Frequency of analysis/ assay: Referred to external test site
  • Turnaround Time: 21 days
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: N/A

 

Fanconi Anaemia

 

  • Test Name: Fanconi Anaemia
  • Laboratory: Haem.external
  • Specimen Type: EDTA
  • Specimen Container: Purple
  • Specimen Volume: 2.5 ml
  • Specimen Requirements: Do not send Fridays
  • Other details: Only to be requested via the haematology medical team
  • Frequency of analysis/ assay: Referred to external test site
  • Turnaround Time: < 4 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: 5 Days

 

Farmer's Lung Antibodies

 

  • Test Name: Farmer's Lung Antibodies
  • Laboratory: Serology External
  • Specimen Type: Clotted Blood Specimen
  • Specimen Container: Yellow, white (paediatric).
  • Specimen Volume: 4ml clotted blood (1.5ml paediatric).
  • Specimen Requirements: Refrigerate if delay in sending to the laboratory
  • Other details: N/A
  • Frequency of analysis/ assay: Referred to external test site
  • Turnaround Time: 7-10 days
  • Phone alert limits: N/A
  • Preanalytical stability at room temp:N/A

 

Ferritin

 

  • Test Name: Ferritin
  • Laboratory: Biochemistry
  • Specimen Type: Serum
  • Specimen Container: Yellow
  • Specimen Volume: 4mls
  • Specimen Requirements: Same sample suffices for folate/B12
  • Other details: Repeat tests not performed within one month
  • Frequency of analysis/ assay:
  • Turnaround Time: 3 working days
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: 7 days

 

Fibrinogen

 

  • Test Name: Fibrinogen
  • Laboratory: Haematology
  • Specimen Type: Trisodium Citrate
  • Specimen Container: Blue
  • Specimen Volume: 3mls
  • Specimen Requirements: Inadequately filled tubes cannot be used.
  • Other details: Contact lab prior to sending sample
  • Frequency of analysis/ assay: As required
  • Turnaround Time: 2 working days
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: Samples should ideally be processed within 4 hours of collection.  Please send to the lab ASAP

FK506 (Tacrolimus)

  • Refer to Tacrolimus test details

Flecanide (Tambocar)

  • Test Name: Flecanide (Tambocar)
  • Laboratory: Biochemistry
  • Specimen Type: Serum
  • Specimen Container: Yellow
  • Specimen Volume: 4mls
  • Specimen Requirements: Send sample to lab within 2 hours. Include information on dosage.
  • Other details: N/A
  • Frequency of analysis/ assay:
  • Turnaround Time: 3 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: Sample must be separated and frozen < 3 hours.

 

Fluid analysis (Protein , glucose and LDH)

  • Test Name: Fluid analysis (Protein, glucose and LDH)
  • Laboratory: Biochemistry
  • Specimen Type: Fluid
  • Specimen Container: Sterile universal container (white top)
  • Specimen Volume: 2mls
  • Specimen Requirements: N/A
  • Other details: Fluid amylase and fluid albumin available upon request. Viscous samples cannot be analysed. For pleural fluids total protein > 30g/L suggests an exudate.
  • Frequency of analysis/ assay: Daily
  • Turnaround Time: 1 working day.
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: N/A

 

Fluids (from sterile sites)

  • Test Name: Fluids (from sterile sites)
  • Laboratory: Microbiology
  • Specimen Type: Ascitic, Joint (Synovial), Pericardial, Peritoneal, CAPD.
  • Specimen Container: Sterile universal container.
  • Specimen Volume: At least 1ml of fluid. At least 50ml CAPD fluid.
  • Specimen Requirements: Refrigerate if delay in sending to the laboratory
  • Other details: N/A
  • Frequency of analysis/ assay: Daily
  • Turnaround Time: 2-4 days
  • Phone alert limits: Beta Haemolytic Streptococcus Group A isolates, Beta Haemolytic Streptococcus Group B isolates from maternity, postnatal and neonatal patients, new MRSA and VRE isolates from inpatients are all phoned to the requesting clinician
  • Preanalytical stability at room temp: N/A

 

Fluid pH (Plerual Fluid)

  • Test Name: Fluid pH                                                                                                                                                                                                                                                                         
  • Laboratory: Biochemistry                                                                                                                                                                                                                                                                 
  • Specimen Type: Fluid                                                                                                                                                                                                                                                                       
  • Specimen Container: 3ml Blood gas syringe                                                                                                                                                                                                                                   
  • Specimen Volume: 2ml (approx)                                                                                                                                                                                                                                                     
  • Specimen requirements: The sample must be collected anerobically (all air bubbles removed).  Sample must be received in the lab within 15 minutes of collection and the Biochemistry lab must be informed of the intention to take the sample.                                                                                                                                                                                                     
  • Other details: Clotted or viscous samples cannot be analysed.                                                                                                                                                                                                       
  • Frequency of analysis/assay: Daily                                                                                                                                                                                                                                                 
  • Turnaround Time: 30min                                                                                                                                                                                                                                                                 
  • Phone Alert Limits: N/A                                                                                                                                                                                                                                                                   
  • Preanalytical stability at room temp: Must be in the lab within 15 minutes of collection                                                                     

Folate

  • Test Name: Folate
  • Laboratory: Biochemistry
  • Specimen Type: Serum
  • Specimen Container: Yellow
  • Specimen Volume: 4mls
  • Specimen Requirements: Sample suffices for B12/ferritin
  • Other details: Repeat tests not performed within one year
  • Frequency of analysis/ assay: N/A
  • Turnaround Time: 3 working days
  • Phone alert limits:
  • Preanalytical stability at room temp: 7 days

Free T4

  • Test Name: Free T4
  • Laboratory: Biochemistry
  • Specimen Type: Serum, plasma
  • Specimen Container: Yellow, Green top for WRH in house samples only.
  • Specimen Volume: 4mls
  • Specimen Requirements: N/A
  • Other details: TSH is assayed as a first line test. FT4 is assayed when the TSH is outside of defined reference range, in all patients < 16 yrs and by special endocrinologist request.
  • Frequency of analysis/ assay: Daily.
  • Turnaround Time: 3 working days
  • Phone alert limits: > 100pmol/L
  • Preanalytical stability at room temp: N/A

Fructosamine

  • Test Name: Fructosamine
  • Laboratory: Haematology referral test
  • Specimen Type: Clotted
  • Specimen Container: Yellow
  • Specimen Volume: 3.5ml
  • Specimen Requirements: Send to lab ASAP as serum must be separated from sample
  • Other details: Test may be useful when it is not possible to perform an HbA1c analysis due to the presence of a haemoglobin variant.
  • Frequency of analysis/ assay: As required
  • Turnaround Time: 2 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: Separated serum stable for 14 days at 2 - 8°C

 

FSH

  • Test Name: FSH
  • Laboratory: Biochemistry
  • Specimen Type: Serum, plasma
  • Specimen Container: Yellow, green top for WRH in house samples only.
  • Specimen Volume: 4mls
  • Specimen Requirements:
  • Other details: See reference ranges here
  • Frequency of analysis/ assay:
  • Turnaround Time: 3 working days
  • Phone alert limits:
  • Preanalytical stability at room temp: 7 days

 

Full Blood Count (FBC)

  • Test Name: Full Blood Count (FBC)
  • Laboratory: Haematology
  • Specimen Type: EDTA
  • Specimen Container: Purple
  • Specimen Volume: 2.5ml
  • Specimen Requirements:
  • Other details: Automated diff unsuitable on samples >72hrs
  • Frequency of analysis/ assay: Daily
  • Turnaround Time: Routine - 2 working day Urgent <2 hours
  • Phone alert limits: Hb <8.0 g/dl, Neutrophils <0.5 x 109/L, Neutrophils >50 x 109/L, Platelets <30 x 109/L, Platelets >1000 x 109/L
  • Preanalytical stability: Sample suitable at room temp. up to 12 hours. After 12 hours, if stored at 2- 8°C the sample is suitable for: FBC - 4 days and Automated DIFF - 3 days.

Fungal infections - non-superficial

  • Test Name: Fungal infections - non-superficial
  • Laboratory: Microbiology
  • Specimen Type: Tissue, Pus/Aspirate, Swabs, Sputum / Broncho-alveolar Lavage (BAL).
  • Specimen Container: Sterile universal container, amies swab.
  • Specimen Volume: As large a tissue sample as possible should be sent. At least 1ml of pus/fluid. If possible at least 5ml sputum /
  • Specimen Requirements: Refrigerate if delay in sending to the laboratory
  • Other details: N/A
  • Frequency of analysis/ assay: Daily
  • Turnaround Time: Up to 28 days for culture
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: N/A

Fungal infections -superficial

  • Test Name: Fungal infections -superficial
  • Laboratory: Microbiology
  • Specimen Type: Skin, Nail, Hair.
  • Specimen Container: Sterile universal container, dermapak.
  • Specimen Volume: N/A
  • Specimen Requirements: N/A
  • Other details: N/A
  • Frequency of analysis/ assay: Daily
  • Turnaround Time: 1-3 days for Fungal Hyphae microscopy Up to 28 days
  • for culture
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: N/A