What are blood hemoglobin estimation methods?

Yashthebusidoc Answered Most Recently
what are the various methods of the Hb estimation???/kindly tell me the senstivity of the methods. i know only one method sahli hemoglobinometer(acid hematin) method. I have enumerated fewSahli - Adam's Method Dare's method Haden's method Wintrobe's method Haldane's method Talliquist method Gasometric method Spectrophotometric method Automated & non-automated hemolglobinometry Other methods alkaline hematin method specific gravity comparator method