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Table 2Criteria for the diagnosis of diabetes1. A1C _6.5%. The test should be performed in a laboratory using a methodthat is NGSP certified and standardized to the DCCT assay.*OR2. FPG _126 mg/dl (7.0 mmol/l). Fasting is defined as no caloric intake for atleast 8 h.*OR

3.Two-hour plasma glucose _200 mg/dl (11.1 mmol/l) during an OGTT.The test should be performed as described by the World HealthOrganization, using a glucose load containing the equivalent of 75 ganhydrous glucose dissolved in water.*OR4. In a patient with classic symptoms of hyperglycemia or hyperglycemiccrisis, a random plasma glucose _200 mg/dl (11.1 mmol/l).*In the absence of unequivocal hyperglycemia, criteria 13 should be confirmed by repeat testing.

Table 3Categories of increased risk for diabetes*FPG 100125 mg/dl (5.66.9 mmol/l) _IFG_2-h PG on the 75-g OGTT 140199 mg/dl (7.811.0 mmol/l) _IGT_

A1C 5.76.4%*For all three tests, risk is continuous, extending below the lower limit of the range and becoming disproportionatelygreater at higher ends of therange.

Table 4Criteria for testing for diabetes in asymptomatic adult individuals1. Testing should be considered in all adults who are overweight (BMI _25 kg/m2*) and have additional riskfactors: physical inactivity first-degree relative with diabetes members of a high-risk ethnic population (e.g., African American, Latino, Native American, AsianAmerican, Pacific Islander) women who delivered a baby weighing _9 lb or were diagnosed with GDM hypertension (_140/90 mmHg or on therapy for hypertension) HDL cholesterol level _35 mg/dl (0.90 mmol/l) and/or a triglyceride level _250 mg/dl (2.82 mmol/l) women with polycystic ovary syndrome A1C _5.7%, IGT, or IFG on previous testing other clinical conditions associated with insulin resistance (e.g., severe obesity, acanthosis nigricans) history of CVD2. In the absence of the above criteria, testing diabetes should begin at age 45 years3. If results are normal, testing should be repeated at least at 3-year intervals, with consideration of morefrequent testing depending on initial results and risk status.*At-risk BMI may be lower in some ethnic groups.

Table 5Testing for type 2 diabetes in asymptomatic children

Criteria: Overweight (BMI _85th percentile for age and sex, weight for height _85th percentile, or weight_120% of ideal for height)

Plus any two of the following risk factors: Family history of type 2 diabetes in first- or second-degree relative Race/ethnicity (Native American, African American, Latino, Asian American, Pacific Islander) Signs of insulin resistance or conditions associated with insulin resistance (acanthosis nigricans,hypertension, dyslipidemia,polycystic ovary syndrome, or small for gestational age birthweight) Maternal history of diabetes or GDM during the childs gestation

Age of initiation: Age 10 years or at onset of puberty, if puberty occurs at a younger age

Frequency: Every 3 years

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Table 6Screening for and diagnosis of GDMCarry out diabetes risk assessment at the first prenatal visit.Women at very high risk should be screened for diabetes as soon as possible after the confirmation ofpregnancy. Criteria for very high risk are: Severe obesity Prior history of GDM or delivery of large-for-gestational-age infant Presence of glycosuria

Diagnosis of PCOS Strong family history of type 2 diabetesScreening/diagnosis at this stage of pregnancy should use standard diagnostic testing (Table 2).All women of greater than low risk of GDM, including those above not found to have diabetes early inpregnancy, should undergo GDM testing at 2428 weeks of gestation. Low risk status, which does notrequire GDM screening, is defined as women with ALL of the following characteristics: Age _25 years Weight normal before pregnancy Member of an ethnic group with a low prevalence of diabetes No known diabetes in first-degree relatives No history of abnormal glucose tolerance No history of poor obstetrical outcome

Two approaches may be followed for GDM screening at 2428 weeks:1. Two-step approach:

A. Perform initial screening by measuring plasma or serum glucose 1 h after a 50-g load of _140mg/dl identifies _80% of women with GDM, while the sensitivity is further increased to _90% by athreshold of _130 mg/dl.

B. Perform a diagnostic 100-g OGTT on a separate day in women who exceed the chosenthreshold on 50-g screening.2. One-step approach (may be preferred in clinics with high prevalence of GDM): Perform a diagnostic100-g OGTT in all women to be tested at 2428 weeks.

The 100-g OGTT should be performed in the morning after an overnight fast of at least 8 h.

To make a diagnosis of GDM, at least two of the following plasma glucose values must be found: Fasting _95 mg/dl 1-h _180 mg/dl 2-h _155 mg/dl 3-h _140 mg/dl

Table 8Components of the comprehensive diabetes evaluation

Medical history Age and characteristics of onset of diabetes (e.g., DKA, asymptomatic laboratory finding) Eating patterns, physical activity habits, nutritional status, and weight history; growth and developmentin children and adolescents Diabetes education history Review of previous treatment regimens and response to therapy (A1C records) Current treatment ofdiabetes, including medications, meal plan, physical activity patterns, and results of glucose monitoring

and patients use of data DKA frequency, severity, and cause Hypoglycemic episodes Hypoglycemia awareness Any severe hypoglycemia: frequency and cause History of diabetes-related complications Microvascular: retinopathy, nephropathy, neuropathy (sensory, including history of foot lesions;autonomic, including sexual dysfunction and gastroparesis) Macrovascular: CHD, cerebrovascular disease, PAD Other: psychosocial problems*, dental disease*

Physical examination Height, weight, BMI Blood pressure determination, including orthostatic measurements when indicated

Fundoscopic examination*Thyroid palpation Skin examination (for acanthosis nigricans and insulin injection sites) Comprehensive foot examination:

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Inspection Palpation of dorsalis pedis and posterior tibial pulses Presence/absence of patellar and Achilles reflexes Determination of proprioception, vibration, and monofilament sensation

Laboratory evaluation A1C, if results not available within past 23 months

If not performed/available within past year: Fasting lipid profile, including total, LDL- and HDL cholesterol and triglycerides Liver function testsTest for urine albumin excretion with spot urine albumin/creatinine ratio Serum creatinine and calculated GFRTSH in type 1 diabetes, dyslipidemia, or women over age 50 years Referrals Annual dilated eye exam Family planning for women of reproductive age Registered dietitian for MNT DSME Dental examination Mental health professional, if needed* See appropriate referrals for these categories.

Table 9Correlation of A1C with averageglucose

A1C (%) Mean plasma glucose mg/dl mmol/l

6 126 7.0

7 154 8.6

8 183 10.2

9 212 11.8

10 240 13.4

11 269 14.9

12 298 16.5

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These estimates are based on ADAG data of _2,700 glucose measurements over 3 months per A1C measurement in507 adults with type 1, type 2, and no diabetes. The correlation between A1C and average glucose was 0.92 (49). Acalculator for converting A1C results into estimated average glucose (eAG), in either mg/dl or mmol/l, is available athttp://professional.diabetes.org/eAG.

Table 11 Summary of glycemic recommendations for non-pregnant adults with diabetes

A1C