Welch Allyn SureTemp® Plus 690 and 692 Electronic Thermometers 

With

This is a quotation from the manual (Welch Allyn SureTemp OEM Implementation Guide) "Inaccurate measurement risk. Use only HILLROM probe covers. The use of other manufacturer's probe covers or no probe cover may produce temperature measurement errors and/or inaccuracy."

My answer will be somewhat lengthy and I am quoting two references. As for the technicality of the thermometer, I am quoting the manual (Welch Allyn SureTemp OEM Implementation Guide) which states "WARNING Patient injury risk. Inaccurate measurement risk. Oral/axillary probes (blue ejection button at top of probe) and blue removable probe wells are used for taking oral and axillary temperatures only. Rectal probes (red ejection button) and red removable probe wells are used for taking rectal temperatures only. Use of the incorrect probe and/ or removable probe well could result in patient cross-contamination. Use of the probe at the wrong site will result in temperature errors." Secondly, the other quotation centers around the physiology and the clinical side of the temperature measurement, so we can put the pieces together. Reference (HUTCHISON’S CLINICAL METHODS, 24th edition) "Body temperature may be recorded in the mouth, axilla, ear or rectum. A ‘normal’ mouth temperature is 35.8-37°C. Those in the ear and rectum are 0.5°C higher and in the axilla 0.5°C lower. There is a diurnal variation in temperature; the lowest values are recorded in the early morning with a maximum between 6 and 10 pm."

I think my middle school uses the sure temp too

Rectal is- from what I heard

@@Klebawls Eh, That Is A Misconception, The 2 Most Accurate Are The Ear Method Or Oral Method.

@@youtubevlogproductions1567 No, even recent studies have shown that the rectal temperature is the most accurate, followed by ear (only if used correctly) THEN oral, then axillary.

My answer will be somewhat lengthy and I am quoting two references. As for the technicality of the thermometer, I am quoting the manual (Welch Allyn SureTemp OEM Implementation Guide) which states "WARNING Patient injury risk. Inaccurate measurement risk. Oral/axillary probes (blue ejection button at top of probe) and blue removable probe wells are used for taking oral and axillary temperatures only. Rectal probes (red ejection button) and red removable probe wells are used for taking rectal temperatures only. Use of the incorrect probe and/ or removable probe well could result in patient cross-contamination. Use of the probe at the wrong site will result in temperature errors." Secondly, the other quotation centers around the physiology and the clinical side of the temperature measurement, so we can put the pieces together. Reference (HUTCHISON’S CLINICAL METHODS, 24th edition) "Body temperature may be recorded in the mouth, axilla, ear or rectum. A ‘normal’ mouth temperature is 35.8-37°C. Those in the ear and rectum are 0.5°C higher and in the axilla 0.5°C lower. There is a diurnal variation in temperature; the lowest values are recorded in the early morning with a maximum between 6 and 10 pm."

I agree the rectal is very accurate esp with a high quality machine