T Tests

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T3 (free)

  • Test Name: T3 (free)
  • Laboratory: Biochemistry
  • Specimen Type: Serum, plasma
  • Specimen Container: Yellow, green for WRH in house samples only.
  • Specimen Volume: 4mls
  • Specimen Requirements: Appropriate clinical details must be provided. Ie T3 thyrotoxicosis, hyperthyroid, overtreated hypothyroid.
  • Other details: N/A
  • Frequency of analysis/ assay: Daily
  • Turnaround Time: 3 working days
  • Phone alert limits: N/A
  • Preanalytical stability at room temp:

T4 (free)

  • Test Name: T4 (free)
  • 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: 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:

Tacrolimus assay

  • Test Name: Tacrolimus assay
  • Laboratory: Haematology
  • Specimen Type: EDTA
  • Specimen Container: Purple
  • Specimen Volume: 2.5 ml
  • Specimen Requirements:
  • Other details: N/A
  • Frequency of analysis/ assay: Analysis performed twice per week (Tuesdays and Thursdays)
  • Turnaround Time: 5 days
  • Phone alert limits: >20 ng/ml
  • Preanalytical stability: 7 days at 2 - 8°C

Targocid/Teicoplanin

  • Test Name: Targocid/Teicoplanin
  • Laboratory: Biochemistry Referred Test
  • Specimen Type: Serum FROZEN
  • Specimen Container: Yellow
  • Specimen Volume: 4mls
  • Specimen Requirements: Trough sample only required.
  • Other details: Send separate request form and sample
  • Frequency of analysis/ assay:
  • Turnaround Time: 6 days
  • Phone alert limits: N/A
  • Preanalytical stability at room temp:

TBG(Thyroxine Binding Globulin)

  • Test Name: TBG (Thyroxine Binding Globulin)
  • Laboratory: Biochemistry Referred Test
  • Specimen Type: Serum or lithium heparing plasma
  • Specimen Container: Yellow or green
  • Specimen Volume: 4ml
  • Specimen Requirements: Specimen to be sent to lab within 3 hours of collection
  • Other details: Send a separate request form and sample
  • 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 the laboratory < 4 hours.

Tegretol (carbamazepine)

  • Test Name: Tegretol (carbamazepine)
  • Laboratory: Biochemistry
  • Specimen Type: Serum, plasma
  • Specimen Container: Yellow, green for WRH in house samples only.
  • Specimen Volume: 4mls
  • Specimen Requirements: Query adequate therapy, take sample prior to next dose.
  • Query toxicity take sample 2-4 hours after oral dose.
  • Other details: N/A
  • Frequency of analysis/ assay: Daily
  • Turnaround Time: Routine 2 working day. Urgent < 3 hours
  • Phone alert limits: >25 ug/ml
  • Preanalytical stability at room temp:

Testosterone

  • Test Name: Testosterone
  • 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: 3 working days
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: 7 days (1 day in women)

Testosterone - Free

  • Test Name: Testosterone - Free
  • Laboratory: Biochemistry referral test
  • Specimen Type: Serum
  • Specimen Container: Yellow
  • Specimen Volume: 4mls
  • Specimen Requirements: Special request only, please consult with the Biochemistry Lab UHW prior to sample collection.
  • Other details: Send a separate request form and sample
  • 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 the lab < 4 hours.

Theophylline (aminophylline)

  • Test Name: Theophylline (aminophylline)
  • Laboratory: Biochemistry
  • Specimen Type: Serum, plasma
  • Specimen Container: Yellow, green for WRH in house samples only.
  • Specimen Volume: 4mls
  • Specimen Requirements: Specimen should be taken prior to next dose.
  • Other details: N/A
  • Frequency of analysis/ assay: Daily
  • Turnaround Time: Routine 2 working days Urgent <3 hours
  • Phone alert limits: >25 ug/ml
  • Preanalytical stability at room temp:

Thiopurine Methyl Transferase (TPMT)

  • Test Name: Thiopurine Methyl Transferase (TPMT)
  • Laboratory: Biochemistry Referred Test- SENT SEPARATE EDTA sample & form for referral
  • Specimen Type: EDTA whole blood
  • Specimen Container: Purple
  • Specimen Volume: 5mls
  • Specimen Requirements: Special Request only. Inform the lab prior to sample collection.
  • Other details: Please ALSO request FBC to arrange TMPT referral
  • Frequency of analysis/ assay:
  • Turnaround Time: 3 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp:

Threadworm - See Enterobius vermicularis

Thrombophilia Screen

  • Test Name: Thrombophilia Screen (includes Protein C, Free Protein S, Antithrombin, APCR screen and Lupus Anticoagulant)
  • Laboratory: Haematology
  • Specimen Type: Trisodium Citrate
  • Specimen Container: Blue
  • Specimen Volume: 6 x 3 ml
  • Specimen Requirements: Inadequately filled tubes cannot be used.
  • Other details: Refer to guidelines for thrombophilia screening on the UHW Lab User manual website
  • Frequency of analysis/ assay: Samples are frozen and done in batch analysis every 4-6 weeks
  • Turnaround Time: 4 - 6 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: Samples should ideally be processed within 4 hours of collection. Please send to the laboratory ASAP.

Thrush - see Genital tract and associated infections

Thyroxine Binding Globulin (TBG)

  • Test Name: Thyroxine Binding Globulin (TBG) - see TBG

Thyroglobulin

  • Test Name: Thyroglobulin
  • Laboratory: Biochemistry Referred Test
  • Specimen Type: Serum
  • Specimen Container: Yellow
  • Specimen Volume: 4mls
  • Specimen Requirements: Sample must be received in the lab on the same day as collection
  • Other details: Send a separate request form and sample.
  • Frequency of analysis/ assay:
  • Turnaround Time: 3 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp:

Thyroid Function

  • Test Name: Thyroid Function
  • Laboratory: Biochemistry
  • Specimen Type: Serum, plasma
  • Specimen Container: Yellow, green for WRH in house samples only.
  • Specimen Volume: 4mls
  • Specimen Requirements:
  • 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: TSH: >100uIU/ml. FT4: >100pmol/L
  • Preanalytical stability at room temp:

Tinea 

  • See Fungal Infections- Superficial

Tobramycin

  • Test Name: Tobramycin
  • Laboratory: Biochemistry
  • Specimen Type: Serum
  • Specimen Container: Yellow
  • Specimen Volume: 4mls
  • Specimen Requirements: Clearly indicate dosage and tome of specimen collection on the request form.
  • Other details: N/A
  • Frequency of analysis/ assay: As required
  • Turnaround Time: Routine 1 working day. Urgent < 3 hours.
  • Phone alert limits: N/A
  • Preanalytical stability at room temp:

Tonsillitis

  • Test Name: Tonsillitis
  • Laboratory: Microbiology
  • Specimen Type: Throat swab
  • Specimen Container: Amies swab.
  • Specimen Volume: N/A
  • Specimen Requirements: Refrigerate if delivery to the laboratory is delayed
  • Other details: N/A
  • Frequency of analysis/ assay: Daily
  • Turnaround Time: 1-3 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

TORCH Screen

  • Test Name: TORCH Screen
  • 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: Test consists of Toxoplaslma, Rubella IgM, and CMV IgM.
  • Frequency of analysis/ assay: Twice weekly
  • Turnaround Time: 3-5 days
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: N/A

Toxicology (Urine)

  • Test Name: Toxicology (Cannabinoids, Amphetamines, Ecstasy, Benzodiazepines, Cocaine, Opiates, Alcohol, Methadone and Barbiturates)
  • Laboratory: Biochemistry Referred Test
  • Specimen Type: Urine
  • Specimen Container: Sarstedt Urine Z bottle (yellow cap), Boric acid container (red top) unsuitable
  • Specimen Volume: 4ml blood or 3.2 ml urine
  • Specimen Requirements: 
  • Other details: 
    • These results are not suitable for medicolegal purposes
    • Note also Paracetamol & Salicylate levels are only measured on blood samples received for toxicology profiles (See Tests Paracetamol & Salicylate for sample requirements)
    • Where screening for drugs of abuse is required please send urine sample as above
  • Frequency of analysis/ assay:
  • Turnaround Time: 3 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: N/A

Toxocara Antibodies

  • Test Name: Toxocara 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 delivery to the laboratory is delayed
  • Other details: N/A
  • Frequency of analysis/ assay: Referred to the external test site
  • Turnaround Time: 15 days
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: N/A

Toxoplasma Antibodies

  • Test Name: Toxoplasma Antibodies
  • 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: Specific clinical details required before tests carried out.
  • Frequency of analysis/ assay: Weekly.
  • Turnaround Time: 20 days
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: N/A

Toxoplasma-PCR

  • Test Name: Toxoplasma-PCR
  • Laboratory: Serology External
  • Specimen Type: EDTA Blood Specimen
  • Specimen Container: Purple, white (paediatric).
  • Specimen Volume: 2.5.mls (1.5ml paediatric).
  • Specimen Requirements: N/A
  • 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

Transferrin

  • Test Name: Transferrin
  • 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 2 working day. Urgent < hours
  • Phone alert limits: N/A
  • Preanalytical stability at room temp:

Transferrin saturation

  • Test Name: Transferrin saturation
  • 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: This is a calculated parameter using a formula that incorporates the serum iron and transferrin. Please provide appropriate clinical details on the request form.
  • Frequency of analysis/ assay: daily
  • Turnaround Time: Routine 2 working day. Urgent < 3 hours.
  • Phone alert limits: N/A
  • Preanalytical stability at room temp:

Transfusion Reaction Investigation

  • Test Name: Transfusion Reaction Investigation
  • Laboratory: Blood Transfusion
  • Specimen Type: EDTA See, Blood Transfusion Department Web
  • page for 'Transfusion Reaction Investigation' link,
  • Specimen Container: Pink
  • Specimen Volume: 6ml
  • Specimen Requirements:
  • Other details: See, Blood Transfusion Department Web page for
  • 'Transfusion Reaction Investigation' link
  • Frequency of analysis/ assay: As Required
  • Turnaround Time: Next working day.
  • Phone alert limits:
  • Preanalytical stability at room temp:

Trichomonas vaginalis

  • Test Name: Trichomonas vaginalis (molecular)
  • Laboratory: Microbiology
  • Specimen Type: Endocervical/vaginal swabs, male urethral swab or first catch urine
  • Specimen Container: Abbott multi-collect specimen collection kit can be used for swabs and urine specimens
  • Specimen Volume: Add urine to specimen transport buffer in transport tube until the liquid level falls within the fill window on the tube label.
  • Specimen Requirements: See Abbott multi-collect specimen collection kit information for users for details of specimen collection
  • Other details: N/A
  • Frequency of analysis/ assay: Daily
  • Turnaround Time: 5 days
  • Phone alert limits: N/A
  • Preanalytical stability at room temp: Urine specimens and swab specimens can be stored in the specimen transport buffer in transport tube at 2 to 30 degrees celsius for up to 14 days 

Triglyceride (Trig)

  • Test Name: Triglyceride (Trig)
  • Laboratory: Biochemistry
  • Specimen Type: Serum, plasma
  • Specimen Container: Yellow, green for WRH in house samples only.
  • Specimen Volume: 4mls
  • Specimen Requirements: Patient should be fasting for 12-14 hours.
  • Other details: For reference ranges and intervention cut offs for all lipid tests, please refer to the National Laboratory Handbook HERE. This includes a quick reference card for testing. 
  • Frequency of analysis/ assay: daily.
  • Turnaround Time: Routine - 2 working day. Urgent < 3 hours
  • Phone alert limits: N/A
  • Preanalytical stability at room temp:

Troponin

  • Test Name: Troponin T
  • Laboratory: Biochemistry
  • Specimen Type:  Plasma
  • Specimen Container: Green
  • Specimen Volume: 4mls
  • Specimen Requirements: Separate sample required for Troponin T Testing. Out of Hours Medical Scientist On-Call MUST be bleeped for any urgent troponin requests
  • Other details: Please refer to TroponinGuideline.pdf (size 255.3 KB)
  • Frequency of analysis/ assay: Daily
  • Turnaround Time: 1 hour from time of receipt in laboratory (Lab Must be bleeped after 5pm)
  • Phone alert limits: >10,000
  • Preanalytical stability at room temp:

Tryptase

  • Test Name: Tryptase
  • Laboratory: Biochemistry Referred Test
  • Specimen Type: Serum
  • Specimen Container: Yellow
  • Specimen Volume: 4mls
  • Specimen Requirements:
  • Other details: Draw blood as soon as possible after anaphylactic shock and again after 2 and 8 hours.
  • Frequency of analysis/ assay:
  • Turnaround Time: 3 weeks
  • Phone alert limits: N/A
  • Preanalytical stability at room temp:

TSH

  • Test Name: TSH
  • 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: 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: > 100uIU/ml
  • Preanalytical stability at room temp: 7 days

Tuberculosis / Mycobacteria

  • Test Name: Tuberculosis / Mycobacteria
  • Laboratory: Microbiology
  • Specimen Type: Sputum, Broncho-alveolar lavage (BAL), Early Morning Urine (EMU), Tissue, Blood Culture (bone marrow
  • Specimen Container: Sterile universal container. Larger white-topped sterile universal container (200ml) for EMU
  • Specimen Volume: If possible at least 5ml sputum / BAL. At least 40ml urine. As large a tissue sample as possible should be sent.
  • Specimen Requirements: For Mycobacteria (AFB) collect three specimens on consecutive days - do not pool specimens.
  • Other details: N/A
  • Frequency of analysis/ assay: Daily
  • Turnaround Time: Microscopy for Acid Fast bacilli (AFB) 1 day 6 weeks for culture. Isolated Mycobacteria referred to external reference laboratory
  • Phone alert limits: Positive AFB and new isolates of Mycobacterium sp. will be phoned to the requesting clinician
  • Preanalytical stability at room temp: N/A