aabbasicquck Flashcards
Deca:Deci:
Deca: 10^1Deci: 10^-1Centi: 10^-2Milli: 10^-3
LDL calc
TC - (TG/5 + HDL)TC= cholesterol
Centrifuge: head/rotor, carriers/shieldsRCF: relative centrifugal force calccentrifugar force depends on three factors…recommended RCF and rpm/time
1.118 x 10^-5 x r x rpm^2mass, speed, radius1.118x10-5 is the angular velocityAAB study guide says 1.18RCF 1-1200 or 3500rpm 10-15min
Horizontal/Swinging:fixed angle good to…microcentrifuge for smaller than…ultracentrifuge rpm, for….
Horizontal/Swinging: horizontal when spinningfixed angle good to…sediment small particles fastermicrocentrifuge for smaller than…<2mlultracentrifuge rpm, for….150,000rpm, chylomicrons
Pipettes:Semiautomatic: recalibrate…/yr with…Most accurate pipette, has accuracy of…Pipette that is rinsed after 1st liquid drains….Pipette that drains by gravity, tip to side….Pippette w/2 frosted bands……
Pipettes:Semiautomatic: recalibrate…/yr with…4x/yr, gravimetric(wt=vol, water) or volumetric(dye into water, spectropho)Most accurate pipette, has accuracy of…volumetric/transfer 1:1000Pipette that is rinsed after 1st liquid drains….TC to containPipette that drains by gravity, tip to side….TD to deliverPippette w/2 frosted bands……blow out remaining drop
Inspected etc…Centrifuges for time/speed w/NIST…automatic pipetters…..BSA hoods, thermometers w/NIST….CLIA lab inspections….
Inspected etc…Centrifuges for time/speed w/NIST…6 mths-use daily, need to do more oftenautomatic pipettes…quarterly, every 4 mthsBSA hoods, thermometers w/NIST….yearlyCLIA lab inspections….2yrs
Microscopes…best forBrightfield…Darkfield…Electron…Fluorescent…Phase contrast…Polarized…Diff. interference contrast/DIC….
Microscopes…best forBrightfield…white light, low contrast of bioDarkfield…collect scattered light, spirocheteElectron…electrons,enlarged image, tumor markers, tissueFluorescent…high enery emits lower, ANAPhase contrast…phase shifts, diff in refractive index/contrast, manual PLT ctsPolarized…transmitted polarized light, crystalsDiff. interference contrast/DIC….recominbation of light, 3D
Temp calculations…C to F: 5/9 x (F-32)F to C: (9/5) + 32C to K: C+27395F=C95C=F
95F=35C95C=203F
M:E ratiowhat is counted as myeloid, what isn’twhat is examples of erythroid
M:EM=myeloid, blast count as myeloid-not lymphs/monosE=normo/erthroblast/rubricytes
Molarity calc…Normality calc…
Molary= gmv/L, want mol/LNormality= 1 Eq(each H)/gmw
Osmality NV, calcOsmolar gap…
Osmality 275-295, 1.86Na+Glu/18+BUN/2.8Gap is measured-calculated
SD is the…CV is a measure of…calc…acceptable CV…QC is a measure of…
SD is the square root of varianceCV measures precisionSD/mean x100, <5% acceptableQC measures reliability
Confidence intervals is probability of estimated range, degree of uncertainty1SD=2SD=3SD=acceptable SD for lab/ranges CTRLs are in….
Confidence intervals is probability of estimated range, degree of uncertainty1SD= 68%2SD= 95%3SD= 99%acceptable SD for lab/ranges CTRLs are in…2SD-to find 1SD you find mean, diff on each side is 2SD/2
pH, Henderson equa…normal pH…bicarb:acid…
pH= pka + log (salt/acid) or (A/HA)normal pH 7.4bicard:acid 20:1
Beers law: -concentration=energy absorbed A=abc-transmitted in inverse=A=2-log%TConcentration/absorbance calc…
Concen unk/Con Std = Abs unk/Abs std
Who catergorizes/grades tests based on complexicity…Who determines if test can be waived…Most lab complexicity…PPM is what complexcity…High complexcity tests….
Who catergorizes/grades tests based on complexicity…FDAWho determines if test can be waived…HHSMost lab complexicity…moderatePPM is what complexcity…moderateHigh complexcity tests….-modified FDA cleared-LDT(lab developed)-cytology-serogrouping/gel immuno/electro/flow-pap
Proficiency testing:Required by…up to…/yr…Not required for…These two can inspect…This dept approves PT program…Keep copy of PT for…Unsuccessful PT…-common causes of failure….Alternate PT testing….
Proficiency testing:Required by CMS under CLIA, 3x/yrNot required for…waivedThese two can inspect…CMS, HHSThis dept approves PT program…HHSKeep copy of PT for…2yrs (as most records)Unsuccessful PT…-SAME analyte in 2 CONSECUTIVE testing events or 2/3 testing events-common causes of failure: clerical, instrument method/codes, calibration bias, late turn inAlternate PT testing….-SPLIT sample testing w/ref/other lab or established in house-clin validation by chart review-participate in ungraded/educational PT program
Most errors occur in …and….analytical areasPRE: %, if oral need written w/in…Analytical: %, most common errorPOST: % most common errorKeep records for…BB for…Pathology for…
Most errors occur in pre and post phasePRE: 46%, oral ok/written w/in 30 days-Joint commision national PT safety std=need to PT idsAnalytical: 8%, specimen integrityPOST: 47%, clerical errorrecords 2yrs, BB 5yrs/products 6mths after expire/Pathology 10yrs
Warning error…what to do if 1CTRL is out…Random errors due to…causesSystemic erros due to these 3…-name of gradual loss/drift from mean/causes-name of abrupt change/causes
1st #=how many out consecutively 2nd #=SDWarning error…what to do if 1CTRL is out…-1-2S: repeat same CTRLRandom errors due to… 1-3SD, R-4S-unpredictable, preventable-pipetitng, electronics, HIL-R4S= 2 concensutive outside 4SDSystemic erros due to these 3…-2-2S, 4-1S, 10x-name of gradual loss/drift from mean/causes: deterioation, accumulation, aging-name of abrupt change/causes: reagent/lot change, maintenance, temp
Steps in out of range CTRLS…1.)if only 1-2S…2)If still out…3.)still out…4.)5.)6.)
Steps in out of range CTRLS…1.)if only 1-2S rerun same CTRL 1x2)New vial CTRL/new lot3.)reagents, maintenance, specimen4.)recalibrate/redo ctrls5.)assistance, document corrective action
Safety training/Blood borne training/Chenmical hygiene/TB plan done…-safety records kept…DOT training w/in…every….
Safety/blood borne/chemical hygiene 1yr-safety records kept 3yrsDOT w/in 90 days, 3 yrs
Hazard Communication Std requires….on labels to alert…examples…8
requires pictograms on labels to alert chemical hazards-Health-Environment-Skull crossbone-gas cylinder-flame over circle-exploding bomb-flame-exclamation mark