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THYROID TESTING CASCADE
MessageCHEMISTRY
Test Code
TSH CASCADE
Alias/See Also
TSH CASCADE
Preferred Specimen
SERUM
Minimum Volume
3mLs
Instructions
DRAW 1 GOLD TOP SST TUBE, LET CLOT FOR 30 MINUTES AND SPIN DOWN. The cascade starts with a TSH. If the TSH result is abnormal, a free T4 is performed automatically ("reflex testing"). In cases where a TSH
is suppressed and the free T4 is low or normal, a total T3 is done to test for T3 toxicosis. This test cascade is only intended for ambulatory patients and is not recommended for inpatients, patients with pituitary or hypothalamic disorders or patients with acute illness or neuropsychiatric disease.
is suppressed and the free T4 is low or normal, a total T3 is done to test for T3 toxicosis. This test cascade is only intended for ambulatory patients and is not recommended for inpatients, patients with pituitary or hypothalamic disorders or patients with acute illness or neuropsychiatric disease.
Transport Container
ORIGINAL TUBE
Transport Temperature
REFRIGERATED
Setup Schedule
DAILY
Report Available
DAILY
Reference Range
PLASMA: REF. HIGH: 475, REF. LOW: 204 ug/Dl
Performing Laboratory
WHITE RIVER JUNCTION VT VA- CHEMISTRY 802-295-9363 EXT: 5518, 5519
