Gestational diabetes laboratory findings: Difference between revisions
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__NOTOC__ | __NOTOC__ | ||
{{Gestational diabetes}} | {{Gestational diabetes}} | ||
{{CMG}} | {{CMG}};{{AE}}{{MehdiP}}<br> | ||
For more information regarding GDM laboratory findings please click [[Gestational diabetes diagnostic criteria|here]] | |||
==Overview== | ==Overview== | ||
Generally a test for gestational diabetes is carried out between the 24th and 28th week of pregnancy. If patient is at risk for gestational diabetes (see | Generally, a test for gestational diabetes is carried out between the 24th and 28th week of pregnancy. | ||
If a patient is at risk for gestational diabetes (see [[Gestational diabetes risk factors|risk factors]]), screening should be done earlier in the pregnancy. | |||
==Laboratory Findings== | ==Laboratory Findings== | ||
Depending on the woman's risk and her previous test results, she may have one or more of the following tests.<ref name="pmid26696673">{{cite journal |vauthors= |title=Professional Practice Committee for the Standards of Medical Care in Diabetes-2016 |journal=Diabetes Care |volume=39 Suppl 1 |issue= |pages=S107–8 |year=2016 |pmid=26696673 |doi=10.2337/dc16-S018 |url=}}</ref> | |||
* Screening glucose test | |||
* Screening glucose | |||
* Oral glucose tolerance test (OGTT) | * Oral glucose tolerance test (OGTT) | ||
===Screening glucose | ===Screening glucose test=== | ||
There are several tests intended to identify gestational diabetes in pregnant women. The first, called the | There are several tests intended to identify gestational diabetes in pregnant women. <ref name="pmid7148898">{{cite journal |vauthors=Carpenter MW, Coustan DR |title=Criteria for screening tests for gestational diabetes |journal=Am. J. Obstet. Gynecol. |volume=144 |issue=7 |pages=768–73 |year=1982 |pmid=7148898 |doi= |url=}}</ref><ref name="pmid510803">{{cite journal |vauthors= |title=Classification and diagnosis of diabetes mellitus and other categories of glucose intolerance. National Diabetes Data Group |journal=Diabetes |volume=28 |issue=12 |pages=1039–57 |year=1979 |pmid=510803 |doi= |url=}}</ref> | ||
* The first, called the screening glucose challenge test, is a preliminary screening test performed between 24-28 weeks. If a woman tests positive during this screening test, a second test called the Glucose Tolerance Test, may be performed. | |||
* The second test confirms the diagnoses. | |||
The screening glucose challenge test is now considered as the standard test performed during the second trimester of pregnancy. | |||
===Oral glucose tolerance test=== | ===Oral glucose tolerance test=== | ||
Women who are considered at risk for gestational diabetes are given a screening test called a 50 gram glucose challenge between the 24th and 28th weeks of pregnancy (those with two or more risk factors may be tested earlier). The glucose challenge is performed by giving 50 grams of a glucose drink and then drawing a blood sample one hour later | Women who are considered at risk for gestational diabetes are given a screening test called a 50 gram glucose challenge between the 24th and 28th weeks of pregnancy (those with two or more risk factors may be tested earlier). The glucose challenge is performed by giving 50 grams of a glucose drink and then drawing a blood sample one hour later to measure the level of blood glucose present. Women with a blood sugar level greater than 140 mg/dl may have gestational diabetes, and require a follow-up test called a 3-hour oral glucose tolerance test (OGTT). <ref name=niddk>{{cite web | Boyd E. Metzger, M.D., Susan A. Biastre, R.D., L.D.N., C.D.E., Beverly Gardner, R.D., L.D.N., C.D.E. | title =What I need to know about Gestational Diabetes | publisher=National Diabetes Information Clearinghouse | work =National Diabetes Information Clearinghouse | url=http://diabetes.niddk.nih.gov/dm/pubs/gestational/ | year = 2006 | accessdate=2006-11-27}}</ref><ref name="pmid7148898">{{cite journal |vauthors=Carpenter MW, Coustan DR |title=Criteria for screening tests for gestational diabetes |journal=Am. J. Obstet. Gynecol. |volume=144 |issue=7 |pages=768–73 |year=1982 |pmid=7148898 |doi= |url=}}</ref><ref name="pmid510803">{{cite journal |vauthors= |title=Classification and diagnosis of diabetes mellitus and other categories of glucose intolerance. National Diabetes Data Group |journal=Diabetes |volume=28 |issue=12 |pages=1039–57 |year=1979 |pmid=510803 |doi= |url=}}</ref> | ||
==References== | |||
{{Reflist|2}} | |||
{{WH}} | {{WH}} | ||
{{WS}} | {{WS}} | ||
[[Category:Obstetrics]] | [[Category:Obstetrics]] | ||
[[Category:Endocrinology]] | [[Category:Endocrinology]] | ||
[[Category:Emergency medicine]] | |||
Latest revision as of 21:51, 29 July 2020
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Seyedmahdi Pahlavani, M.D. [2]
For more information regarding GDM laboratory findings please click here
Overview
Generally, a test for gestational diabetes is carried out between the 24th and 28th week of pregnancy.
If a patient is at risk for gestational diabetes (see risk factors), screening should be done earlier in the pregnancy.
Laboratory Findings
Depending on the woman's risk and her previous test results, she may have one or more of the following tests.[1]
- Screening glucose test
- Oral glucose tolerance test (OGTT)
Screening glucose test
There are several tests intended to identify gestational diabetes in pregnant women. [2][3]
- The first, called the screening glucose challenge test, is a preliminary screening test performed between 24-28 weeks. If a woman tests positive during this screening test, a second test called the Glucose Tolerance Test, may be performed.
- The second test confirms the diagnoses.
The screening glucose challenge test is now considered as the standard test performed during the second trimester of pregnancy.
Oral glucose tolerance test
Women who are considered at risk for gestational diabetes are given a screening test called a 50 gram glucose challenge between the 24th and 28th weeks of pregnancy (those with two or more risk factors may be tested earlier). The glucose challenge is performed by giving 50 grams of a glucose drink and then drawing a blood sample one hour later to measure the level of blood glucose present. Women with a blood sugar level greater than 140 mg/dl may have gestational diabetes, and require a follow-up test called a 3-hour oral glucose tolerance test (OGTT). [4][2][3]
References
- ↑ "Professional Practice Committee for the Standards of Medical Care in Diabetes-2016". Diabetes Care. 39 Suppl 1: S107–8. 2016. doi:10.2337/dc16-S018. PMID 26696673.
- ↑ 2.0 2.1 Carpenter MW, Coustan DR (1982). "Criteria for screening tests for gestational diabetes". Am. J. Obstet. Gynecol. 144 (7): 768–73. PMID 7148898.
- ↑ 3.0 3.1 "Classification and diagnosis of diabetes mellitus and other categories of glucose intolerance. National Diabetes Data Group". Diabetes. 28 (12): 1039–57. 1979. PMID 510803.
- ↑ "What I need to know about Gestational Diabetes". National Diabetes Information Clearinghouse. National Diabetes Information Clearinghouse. 2006. Retrieved 2006-11-27. Text " Boyd E. Metzger, M.D., Susan A. Biastre, R.D., L.D.N., C.D.E., Beverly Gardner, R.D., L.D.N., C.D.E. " ignored (help)