3. COMMON LABORATORY
PROCEDURES
Hormone Levels Assay
Measurements can also be done
after stimulation and suppression
of the secretions- Stimulation and
Suppression tests
BY: ROMMEL LUIS C. ISRAEL III 3
7. COMMON LABORATORY
PROCEDURES
Radio-Active iodine uptake (RAI)
This is a thyroid function test to
measure the absorption of the
injected iodine isotope by the
thyroid tissue
BY: ROMMEL LUIS C. ISRAEL III 7
8. COMMON LABORATORY
PROCEDURES
Radio-Active iodine uptake (RAI)
Increased uptake may indicate
HYPERfunctioning gland
Decreased uptake my indicate
HYPOfunctioning gland
BY: ROMMEL LUIS C. ISRAEL III 8
10. COMMON LABORATORY
PROCEDURES
Thyroid Scan
Pretest- Check for pregnancy,
Thyroid medication may be
withheld temporarily, advise NPO
Post-test- Ensure proper disposal
of body wastes
BY: ROMMEL LUIS C. ISRAEL III 10
11. COMMON LABORATORY
PROCEDURES
BY: ROMMEL LUIS C. ISRAEL III 11
The BMR has a long history in the evaluation
of thyroid function.
It measures the oxygen consumption under
basal conditions of overnight fast and rest
from mental and physical exertion.
it can be estimated from the oxygen
consumed over a timed interval by analysis of
samples of expired air
12. COMMON LABORATORY
PROCEDURES
BY: ROMMEL LUIS C. ISRAEL III 12
BMR
The test indirectly measures metabolic energy
expenditure or heat production.
Results are expressed as the percentage of
deviation from normal after appropriate
corrections have been made for age, sex, and
body surface area.
Low values are suggestive of
hypothyroidism, and high values reflect
thyrotoxicosis.
13. COMMON LABORATORY
PROCEDURES
FASTING BLOOD GLUCOSE
Aids in the diagnosis of Diabetes
Pre-test: NPO for 8 hours
Normal FBS- 80-109 mg/dL
DM- 126 mg/dL and above
BY: ROMMEL LUIS C. ISRAEL III 13
14. COMMON LABORATORY
PROCEDURES
GLUCOSE tolerance test
Aids in the diagnosis of DM
Pre-test: Provide high-
carbohydrate foods x 3 days,
instruct to avoid caffeine, alcohol
and smoking, NPO 10 hours prior
to test
BY: ROMMEL LUIS C. ISRAEL III 14
15. COMMON LABORATORY
PROCEDURES
GLUCOSE tolerance test
Post-test: avoid strenuous
activity for 8 hours
Normal OGTT- 1 and 2 hours
post-prandial- glucose is less than
200 mg/dL
BY: ROMMEL LUIS C. ISRAEL III 15
16. COMMON LABORATORY
PROCEDURES
Glycosylated Hemoglobin A 1-C
Blood glucose bound to RBC
hemoglobin
Reflects how well blood glucose is
controlled for the past 3 months
FASTING is NOT required!
BY: ROMMEL LUIS C. ISRAEL III 16
17. COMMON LABORATORY
PROCEDURES
Glycosylated Hemoglobin A 1-C
Normal level- expressed as percentage
of total hemoglobin
N- 4-7%
Good control- 7.5%or less
Fair control- 7.5 % to 8.9%
Poor control- 9% and above
BY: ROMMEL LUIS C. ISRAEL III 17