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Table 2 Procedures for GDM screening and diagnosis synthesised based on observations, interviews, and available written information, versus instructions from government order on screening

From: Factors influencing timely initiation and completion of gestational diabetes mellitus screening and diagnosis - a qualitative study from Tamil Nadu, India

 

Private urban centre

Government rural centre - performed by private-non-profit laboratory technician

Government rural centre -performed by government laboratory technician

Government order on screening for hyperglycaemia in pregnancy

Step 1:

Attending the health centre for the test

Informed and referred for the test

Via the gynaecologist/obstetrician

Via the village health nurse

Via the village health nurse

Not mentioned

Step 2:

Initiating, completing and getting the report of the test

Attending days

Fasting on Mondays-Saturdays

Fasting on Tuesdays

No-fasting on Thursdays

1) Irrespective of whether she has taken her breakfast or not

Attending time

Morning

Morning

Morning

2) Not mentioned

Gestational age at attendance

No specific gestational age required, but testing is recommended in each trimester

No specific gestational age required, but testing is recommended in each trimester

4th, 6th and 8th month of pregnancy

3) Gestational week 24–28

Flow of the testing procedure

1) Register

2) Consultation with doctor

3) Pay bill

4) Give fasting venous sample

5) Drink prepared glucose solution

6) Wait 1 h

7) Give 1 h venous sample

8) Wait 1 h

9) Give 2 h venous sample

10) Have breakfast and wait for results

1) Register

2) Give fasting venous sample

3) Mix and drink glucose solution

4) Wait 1 h

5) Give 1 h capillary sample

6) Wait 1 h

7) Give 2 h venous sample

8) Go home or wait for regular ANC check-ups

1) Register

2) Drink prepared glucose solution

3) Wait 2 h

4) Give 2 h venous sample

5) Go home

4) Registration not mentioned

5) Drink 75 g glucose solution

6) Wait 2 h

7) Give 2 h venous blood sample

Getting the test report

On the day of the test. Around 1.5–2 h after 2 h sample

Usually 1 week later

If plasma glucose value is 140 mg/dl or more laboratory technician informs village health nurse who informs woman to come back fasting for a second test

Not mentioned

Diagnosis

Steps of confirming test/s step to be completed

A second test not requested as diagnosis is based on first test

A second test not requested as diagnosis is based on first test

1) Register

2) Fasting venous blood sample

3) Have breakfast consisting of 4 idlys (lentil and rice cakes).

4) Wait 1.5 h

5) Give 1.5 h venous sample

6) Go home

A second test not requested as diagnosis is based on first test

Diagnostic cut-off levels used

2 h plasma glucose value ≥140 mg/dl (7.8 mmol/l)

2 h plasma glucose value ≥140 mg/dl (7.8 mmol/l)

Fasting plasma glucose value ≥110 mg/dl (6.1 mmol/l) 1.5 h plasma glucose value ≥140 mg/dl (7.8 mmol/l))

Both values have to be above the cut-off

2 h plasma glucose value ≥140 mg/dl (7.8 mmol/l)