ACTH precursors, plasma
Clinical Background:
To differentiate between pituitary and ectopic causes of Cushing's syndrome.
ACTH precursor concentrations are elevated in patients with ectopic tumours compared with patients pituitary microadenomas.
To differentiate between pituitary and ectopic causes of Cushing's syndrome.
ACTH precursor concentrations are elevated in patients with ectopic tumours compared with patients pituitary microadenomas.
Test Documents
Test Details
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Discipline:
Biochemistry
Biochemistry
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Specimen Container Adult:
Lithium Heparin plasma
Lithium Heparin plasma
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Specimen Container Paediatric:
Lithium Heparin plasma
Lithium Heparin plasma
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Minimum Volume Adult:
2 x 0.5 mL
2 x 0.5 mL
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Minimum Volume Paediatric:
2 x 0.5 mL
2 x 0.5 mL
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Special Requirement:
Sample to be send to the laboratory immediately to be spun within 20 minutes of sampling.
Pro forma to be completed by ward, including full clinical and patient details
Sample to be send to the laboratory immediately to be spun within 20 minutes of sampling.
Pro forma to be completed by ward, including full clinical and patient details
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Sample Stability:
Store at -20°C
Store at -20°C
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Transport Requirements:
Must be transported on dry ice and sent early in the week
Must be transported on dry ice and sent early in the week
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Reference Ranges:
Upper range of normal 100pmol/L (female)
Upper range of normal 100pmol/L (female)
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Routine Contact Name:
Duty Biochemist
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Routine Telephone:
Freeman: 0191 244 8889
RVI: 0191 282 9719Freeman: 0191 244 8889
RVI: 0191 282 9719 -
Routine Email:
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Specialist Test:
Yes
Yes
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Specialist Contact Name:
Endocrine Lab
Endocrine Lab
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Specialist Telephone:
0191 282 4025
0191 282 4025