Cleared Traditional

K770244 - AUTO DIFFERENTIAL CELL COUNTER SYSTEM

K770244 is an FDA 510(k) clearance for AUTO DIFFERENTIAL CELL COUNTER SYSTEM, manufactured by Abbott Laboratories. The device is a Class 2 Hematology device with product code GKZ cleared through the Traditional 510(k) pathway after a 178-day FDA review.

K770244 · Abbott Laboratories · Hematology device
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Aug 1977
Decision
178d
Days
Class 2
Risk

K770244 is an FDA 510(k) clearance for the AUTO DIFFERENTIAL CELL COUNTER SYSTEM. Classified as Counter, Differential Cell (product code GKZ), Class II - Special Controls.

Submitted by Abbott Laboratories (Abbott Park, US). The FDA issued a Cleared decision on August 4, 1977 after a review of 178 days - an extended review cycle.

This device falls under the Hematology FDA review panel, regulated under 21 CFR 864.5220 - the FDA hematology device framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: Standard predicate-based submission. Standard predicate reliance. This clearance follows a standard predicate-based equivalence path within the Hematology review framework, consistent with the majority of Class II 510(k) submissions.

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FDA 510(k) Submission Details - K770244

510(k) Number K770244 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received February 07, 1977
Decision Date August 04, 1977
Days to Decision 178 days
Submission Type Traditional
Review Panel Hematology (HE)
Summary -
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
65d slower than avg
Panel avg: 113d · This submission: 178d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

GKZ Device Classification - Class 2, Special Controls

Product Code GKZ Counter, Differential Cell
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 864.5220
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. This pathway does not require clinical trials - it relies on engineering equivalence and performance data. Most Hematology devices follow this clearance model.