Aa
A
A
Close
Avatar universal
PCR tests
I'm just curious as to how accurate PCR swab tests are? my GP says that it is easier to diagnose a herpes infection either genital or oral using swabs on a sore. If I had a blister/sore/ulcer looking thing that has a clear liquidy surface would that suffice for a PCR swab? how long does it have to be done after the sore bursts open or becomes a blister/sore/ulcer for it to be a valid result?

If the GP was able to get liquid from the sores surface onto the cottonbud end would that be sufficient regardless of time passed?
Cancel
2 Answers
Page 1 of 1
Avatar universal
No one has any info or comments? :(
Comment
Cancel
Comment
Avatar universal
Comment
Comment
Submit Comment
Avatar universal
Your GP is right about swabbing a blister being the best way to diagnose HSV.  A "positive" swab is conclusive.  Unlike blood-testing, where a positive value (IgG) of between 1.1 - 3.5 is actually a negative reading 50% of the time, assuming that the testing was taken 3-4 months after the last possible exposure to the virus.

The experts I have followed on this recommend getting swabbed within 48 hours of the appearance of a blister for accurate swab results.  Getting liquied may be sufficient for testing purposes; but, I have yet to read anyone saying that specifically.
Comment
Cancel
Comment
Avatar universal
Comment
Comment
Submit Comment
Your Answer
Avatar universal
Answer
Know how to answer? Tap here to leave your answer...
Answer
Submit Answer
A
A
Blank
Weight Tracker
Weight Tracker
Start Tracking Now
Herpes Community Resources
Top STDs Answerers
Avatar m tn
Blank
Fleetwood20
Avatar n tn
Blank
veryworried420
3149845 tn?1452625053
Blank
Life360_Dave
fort lauderdale, FL
101028 tn?1419606604
Blank
gracefromHHP
PA
Avatar m tn
Blank
feelingundone
1998092 tn?1391246445
Blank
catinbarefeet