Glucose tolerance test
Name gtt_cat_gprd
Chapter Endocrine, nutritional, metabolic/Diabetes
Categorical result of glucose tolerance test
Data Type Categorical
Data sources GPRD
Repeated Yes
Valid event date range 01/01/1900 - 25/03/2010
Agreed 28.03.2011 (Revision 1)
Category Definition
0 Test not done
1 Results normal
2 Results potentially abnormal
3 Results abnormal
4 Results not recorded
In GPRD test file, IF enttype = 222, gtt_cat = appropriate code (high

counted as abnormal)

OR IF in GPRD clinical file, Read code on gtt code list, gtt_cat = appropriate code

ELSE gtt = 0
Codelist version1
Codelist authorsJulie George, Liam Smeeth, Harry Hemingway
Creation date11 Apr 2011
Category (code) Clinical code Clinical term Datasource lookup
Results normal (1) 44V1.00 Glucose tolerance test normal 13864
Results potentially abnormal (2) 44V2.00 Glucose tol. test impaired 19781
Results potentially abnormal (2) 6AC..00 Review of impaired glucose tolerance 93517
Results potentially abnormal (2) C11y200 Impaired glucose tolerance 10921
Results potentially abnormal (2) R102.12 [D]Impaired glucose tolerance test 3295
Results potentially abnormal (2) R10E.00 [D]Impaired glucose tolerance 10042
Results abnormal (3) 44V3.00 Glucose tol. test diabetic 32770
Results abnormal (3) L188000 Abnormal GTT - unspec whether during pregnancy/puerperium 73647
Results abnormal (3) R102.00 [D]Glucose tolerance test abnormal 11818
Results not recorded (4) 44TM.00 Blood glucose series 47532
Results not recorded (4) 44V..00 Glucose tolerance test 2274
Results not recorded (4) 44V..11 Blood glucose tolerance 31288
Results not recorded (4) 44V..12 Blood sugar tolerance 40176
Results not recorded (4) 44V4.00 GTT = renal glycosuria 55841
Results not recorded (4) 44V6.00 Extended glucose tolerance test 84142
Results not recorded (4) 44VZ.00 Glucose tolerance test NOS 39208
Results not recorded (4) 7P17200 Glucose tolerance test 61767
Results not recorded (4) C313000 Glucose - galactose intolerance 9905
Results not recorded (4) C313500 Glucose intolerance 3505
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