HEMA LAB - HCT Determination Flashcards by Carmina Mislang

Q

tube used for adam’s microhematocrit method

A

capillary tube

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Q

tube used for wintrobe

A

wintrobe tube

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Q

tube used for haden’s modification

A

calibrated tube

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Q

tube used for van allen method

A

tube with bulb

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Q

tube used for sanford-magath method

A

calibrated tube, with funnel-like mouth

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Q

tube used for bray’s method

A

bray’s tube

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Q

anticoagulant for adam’s microhematocrit method

A

heparin in heparinized tube

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Q

anticoagulant for wintrobe

A

double oxalate

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Q

anticoagulant for haden’s modification

A

1.1% sodium oxalatein distilled water

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Q

anticoagulant for van allen method

A

1.6% sodium oxalate in distilled water

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Q

anticoagulant for sanford-magath

A

1.3% sodium oxalate in distilled water

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Q

anticoagulant for bray’s

A

heparin

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Q

normal values for bray’s method

A

M 47vol%

F 42vol%

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Q

normal values for sanford-magath

A

M 2.3 mL = 46-48%

F 2.0 mL = 40-42%

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Q

Automated methods for Hct determination

A

Coulter method

Autoanalyzer

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Q

normal values for Adam’s Microhematocrit method

A

M 40 - 54% or 0.40 - 0.54

F 35 - 49% or 0.35 - 0.49%

Q

RPM and time for Adam’s microhematocrit method

A

10,000 rpm for 4-5 min

Q

RPM and time for Wintrobe method

A

3000 for 30 min

Q

RPM and time for Haden’s modification

A

3000 rpm for 20 min

Q

RPM and time for Van Allen

A

2500 rpm, 15-30 min

Q

RPM and time for Sanford-Magath

A

high speed, 15 min

Q

RPM and time for Bray’s

A

none, let stand for 1 hr

Q

what happens when there is no mixing of blood in tube prior to hematocrit method

A

low Hct

Q

height of sealing clay in adam’s microhematocrit method

A

3 mm

Q

1% hct = ? gm% hgb

A

0.34gm% hgb

Q

1% hct = ? RBC/mm^3

A

107, 000 RBC/mm^3