The simplified revised Geneva score (SRG, see previous section) can be used in conjunction with the D-dimer test to evaluate a patient for pulmonary embolus (PE).
D-dimer test (VIDAS D-dimer exclusion test, bioMerieux): A value < 500 ng/mL excludes a pulmonary embolus.
SRG Interpretation
(3 Tier)
D-Dimer
Percent with PE
low risk
negative
0%
low risk
positive
19%
low risk
unknown
22%
intermediate risk
negative
0%
intermediate risk
positive
36%
intermediate risk
unknown
48%
high risk
NA
64%
SRG Interpretation
(2 Tier)
D-Dimer
Percent with PE
unlikely
negative
0%
unlikely
positive
22%
unlikely
unknown
28%
likely
NA
42%
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