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Biochemistry

TAU protein (Asialotransferrin) - Query CSF leak

TAU protein (Asialotransferrin) - Query CSF leak

Reference Range

Provided by reference laboratory

  • Turnaround Time: 1 week
Magnesium (urine)

Magnesium (urine)

Reference Range

2.4-6.5 mmol/24hr

Testosterone

Testosterone

Reference Range

Adults (Alinity immunoassay):

Female: <1.9 nmol/L

Male aged 18-49 years: 8.3 - 30.2 nmol/L

Male aged >50 years: 7.7 - 24.8 nmol/L

 

Adults (mass spectrometry):

Female: <1.9 nmol/L

Male: 7.0-27.0 nmol/L

  

Paediatrics:

Group

Testosterone (nmol/L)

Neonates

Not reported (can be elevated during year 1)

Female Tanner 1

<0.6

Male Tanner 1

<0.7

 

Reference for mass spectrometry reference ranges: 

  • Kushnir et al (2010). Liquid Chromatography–Tandem Mass Spectrometry Assay for Androstenedione, Dehydroepiandrosterone, and Testosterone with Pediatric and Adult Reference Intervals. Clinical Chemistry 2010:56;1138–77.
  • Turnaround Time: 24 hours (immunoassay), 5 working days (mass spec)
Theophylline

Theophylline

Reference Range

Therapeutic range: 10-20 mg/L (Pre-dose)

  • Minimum time for patient to reach steady state without loading or after dosage change is 2 days
  • Turnaround Time: 24 hours
Faecal Elastase-1

Faecal Elastase-1

Reference Range

Normal: >200 ug/g

Mild to moderate exocrine pancreatic insufficiency: 100 – 200 ug/g

Severe exocrine pancreatic insufficiency: <100 ug/g

  • Turnaround Time: 15 days
Adrenocorticotrophic Hormone (ACTH)

Adrenocorticotrophic Hormone (ACTH)

Reference Range

6 to 51 ng/L.

  • Turnaround Time: 5 days
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