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HomeLab Services GuideTests
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Overview
ข้อมูลทั่วไป Specimen
ข้อมูลสิ่งส่งตรวจ Performance
ข้อมูลการทดสอบ Clinical & Interpretation
ข้อมูลทางคลินิก
 
Test Code (รหัสการทดสอบ):
TSH
Order Name (ชื่อการทดสอบ):
TSH (Thyroid Stimulating Hormone)*
 
Specimen / Container (สิ่งส่งตรวจ/ภาชนะ):
Blood/ Plain Blood (Red Top) 6 mL, 1 tube
 
Turnaround Time (ระยะเวลารอผล):
Specimen collected to reported within 2 hours
 
Useful For (ประโยชน์การทดสอบ):
Screening for thyroid dysfunction and detecting mild (subclinical), as well as overt, primary hypo- or hyperthyroidism in ambulatory patients.

Monitoring patients on thyroid replacement therapy.

Confirmation of thyroid-stimulating hormone (TSH) suppression in thyroid cancer patients on thyroxine suppression therapy.

Prediction of thyrotropin-releasing hormone-stimulated TSH response.
 
Methodology (วิธีการทดสอบ):
Chemiluminescent Microparticle Immuno Assay (CMIA)
 
AliasesName (ชื่อเรียกอื่นๆ) :
Thyroid Stimulating Hormone
TSH
 
 
 
Test Code (รหัสการทดสอบ):
TSH
Order Name (ชื่อการทดสอบ):
TSH (Thyroid Stimulating Hormone)*
 
Collection Specimen Or Container (สิ่งส่งตรวจ/ภาชนะ):
Blood/ Plain Blood (Red Top) 6 mL, 1 tube
 
Specimen Testing Type (สิ่งส่งตรวจที่ใช้ในการทดสอบ):
Serum, minimum volume 1 mL
 
Sub Mission Container (ภาชนะส่งตรวจ):
Plastic vial
 
Rejection Criteria (เกณฑ์ปฏิเสธสิ่งส่งตรวจ):
Hemolysis: 4+ reject
 
Specimen Stabillity (ความคงตัวของสิ่งส่งตรวจ):
Specimen Type Temperature Time
Serun (keep in original tube) Room temperature, 20oC to 28oC 24 hours
Serum Refrigerated, 2oC to 8oC 7 days
Frozen, -10oC 6 months
 
 
 
Test Code (รหัสการทดสอบ):
TSH
Order Name (ชื่อการทดสอบ):
TSH (Thyroid Stimulating Hormone)*
 
Schedule (ตารางการทดสอบ):
Tested Daily (24 Hours)
 
Turnaround Time (ระยะเวลารอผล):
Specimen collected to reported within 2 hours
 
Performing Location (หน่วยงานที่ทำการทดสอบ):
Immunology, Laboratory Department Tel. 13227
 
Specimen Retention Time (ระยะเวลาเก็บสิ่งส่งตรวจ):
5 days
 
 
 
Test Code (รหัสการทดสอบ):
TSH
Order Name (ชื่อการทดสอบ):
TSH (Thyroid Stimulating Hormone)*
 
 
Clinical Information (ข้อมูลทางคลินิก):
In primary hypothyroidism, thyroid-stimulating hormone (TSH) levels will be elevated. In primary hyperthyroidism, TSH levels will be low. The ability to quantitate circulating levels of TSH is important in evaluating thyroid function. It is especially useful in the differential diagnosis of primary (thyroid) from secondary (pituitary) and tertiary (hypothalamus) hypothyroidism. In primary hypothyroidism, TSH levels are significantly elevated, while in secondary and tertiary hypothyroidism, TSH levels are low or normal.

Elevated or low TSH in the context of normal free thyroxine is often referred to as subclinical hypo- or hyperthyroidism, respectively. Thyrotropin-releasing hormone (TRH) stimulation differentiates all types of hypothyroidism by observing the change in patient TSH levels in response to TRH. Typically, the TSH response to TRH stimulation is exaggerated in cases of primary hypothyroidism, absent in secondary hypothyroidism, and delayed in tertiary hypothyroidism. Most individuals with primary hyperthyroidism have TSH suppression and do not respond to TRH stimulation with an increase in TSH over their basal value.

Sick, hospitalized patients may have falsely low or transiently elevated TSH.
 
Reference Value (ค่าอ้างอิง):
TSH-(1).JPG
 
Clinical Reference (เอกสารอ้างอิง):
  1. https://www.mayocliniclabs.com (Retrieved: Feb 2020)
  2. Manufacturer’s Reagent package insert Architect TSH, Abbott Ireland Diagnostic Division, Lisnamuck, Longford Co., Ireland.